范文一:英语常用的连词词汇都有哪些
英语常用的连词词汇都有哪些,
连词在英语中拥有很重要的地位,所以记会、学精、用好常用连词很有必要。
1) 并列 递进
and 和又及
either…or… 或者…或者…
neither…nor… 既不…也不…
besides 在…旁边除了
in addition 另外
still then 就在那时
also 也
such as… 象…一样
in other words 换句话说
as well 也此外
likewise 也而且
this means 这意味着
not only…but also 不但…而且
the same…as 和…一样
similar 相似的
like 象…
such 如此
even 甚至更
furthermore 更
2) 转折
but 但是
however 但是
though 尽管
although 尽管
whereas 然而
while/ nevertheless 然而
not …but 不是…而是
despite 不管
in spite of 不管
unlike 不象
unfortunately 不幸地
on the other hand 另一方面
instead (of ) 代替
rather (than) 不是…而是
conversely 相反地
unless 除非
no matter how/ what/ where /who无论怎样/什么/在哪里/谁
3) 比较
while 然而
on the contrary to 相反地
in contrast 相反
prefer A to B 宁愿选A而不选B
the more…the more 越…越… as … as 和…一样
not so / as …as 不和…一样
more /less than 多/少于
inferior to 比…低级次
superior to 比…高级好
4) 原因
because (of ) 因为由于
as 因为由于
since 因为
as a result of 因为由于
due to 由于
for the reason 因为由于
thanks to 由于
5) 结果
as a result 结果 …
so 因此
Consequently 结果
so (such) … that 如此…以至于
Thus, therefore 因此
6) 列举
first(ly) 首先
second(ly) 其次
third(ly) 再次
finally 最后
one factor (problem, means, feature) 一个因素问题方法特色
another… 另一个…
the most… 最…
一.because,for,since,as,的区别
because语气强,表示客观必然原因:
He is absent, because he is ill. 因为生病,所以他没来。
比较:He is absent, for he is busy. (“生病”是“缺席”的必然原因,“忙”不是必然原因。)
for 语气轻,表示非客观必然的原因,是主观可改变结果的原因,甚至是猜测可能的原因:
He must be ill, for he is absent. “缺席”不一定是“生病”,只是交流猜测。
for 不能放句首,它是并列连词.
since,as 都是不讲自明的原因,是已知的原因.
Since I am a boy, let me carry the case.
As you don't feel well,you had better stay at home.
1.我不进去了,因为我爸爸在里面. I won't go in .for my father is there. 2.昨晚一定是下雨了,因为地很湿. It must have rained last night,for the ground is web. 3.地是湿的,因为昨晚下雨了. The ground is wet, because it rained last night. 4.因为不高兴,他不想出去了. He diden't wanted to go out,for he was unhappy. 5.既然你工作忙,你就不必跟我们一道去了。 Since/As you are busy, you had better not go with us. 6.他付给我比别人少的钱,因为我是个女的. He paid me less than the others, for I'm female. 7.他付给我比别人少的钱,仅仅因为我是个女的. He paid me less than the others, only because I'm female.
8.既然大家都在这,我们开始开会吧. Since everybody is here,let's begin our meeting.
二.when,while,as引导时间状语时的异同.
when,表示时间点,时间段都可以.如状语是短暂动作时,多用when,是时间段时则三个连词都可以.
When/While/As I was walking in the street,I met a friend of mine.
只能用when 的句型:
1.放句中,主句是进行时,从句是短暂动作,表示这时突然
I was reading in the room, when a girl shouted for help.我正在房间看书,这时突然听到有一个女孩喊救
命~
2.从句是短暂动作:When I got up, I heard the bell ring. 当我起床的时候,我听见铃响了。
只能用while的句型:
1.表示对立予盾的对比,这时while相当于but。
I am poor while you are rich.我很穷,你却很富有。
Tom is strong,while John is weak. 汤姆很强壮,而约翰很瘦弱。
2.表示“趁着还来得及的时候,赶快....
趁热打铁.Strike while it is hot.
趁着老师还在教室,你赶快去问他吧. You should go to ask the teacher while he is still in.
只能用as的句型:
1.一边....一边...稳定的动作当从句,不稳定的动作当主句
他一边洗澡一边吹口哨. He whistled as he had a bath. 我一边看书一边听音乐. I listened to music as I read.
2.正如....所知道,预料的一样.... as 在此是关系代词,不能用which代替.
正如众所周知的一样,地球是圆的. As everybody can see,the earth is round.
正如我们预料的那样,他失败了。He failed as we had expected. 正如我们所预料的一样,中国足球队赢了印尼. As we had expected,Chinese Football Team betean Indian
3.随着时间的发展,某事变得......
As thirty years passed by,my mother's hair became gray. 三十年过去了,妈妈的头发成了银色。 As morden industry develops,more and more waste produces. 随着工业的发展,垃圾制造得越来越多。
三.as 与like的区别
1.表示象...一样时,as接从句,like 接短语
Do everything as I do. 象我一样做。
He is/looks like his mother. 他长得像他妈妈。
2.as当介词接短语时,表示作为...不是象...一样的意思.like 当动词时,是喜欢的意思,不要搞混为象... We should study as Lenin studied. 我们应该像列宁那样学习。
As a League Member,I should take everything in the lead. 作为一名团员,我应该起带头作用。
三.untill,
I'll not go untill the bell rings.
unless 条件I'll not go unless you go.除非你走我才走。
肯定句延续I waited untill he came 我一直等到他来。
He lived here until he was 90. 在90岁之前他一直住在这。
I didn't leave untill he came.直到他来我才走。
短暂not until,
I won't stay with you unless you drive the dog out.除非你把狗赶跑,否则我不会和你呆在一起。
四.and,but,however,yet,
顺趋势自然而然发展He studied hard and became a college student.
逆趋势转折He studied hard, but failed in the exam.
中间有逗号,语气轻用however He studied hard, however,he failed in the exam. 不能用but He studied hard, yet he failed in the exam.
Althought he studied hard, yet he failed in the exam.(yet可以与although,though连用,but不能。
五.就近原则,对称原则,附加不理原则
谓语动词就最近距离主语原则:
Either he or his parents (is, are) wrong.
Either you or he (is, are) wrong.
(Is, Are) you or he wrong?
连词后成分对称原则:
Both ....and, neither....nor, not only.....but also....... She can (either sing, sing either)English songs or Chinese songs. She can (either sing, sing either)English songs or dance well.
with后名词附加不影响谓语原则
He as well as his wife and daughters (like, likes) music very much. He with his sons (get, gets )up early every day.
I but you (are, am)wrong.
范文二:并列连词有哪些
并列连词有哪些:
and 和
but 但是
nor 也不
so 因而
yet 然而
however 可是
hence 从此
then 然后
for 因为
or 或者,否则
nevertheless 然而
as well as 也,又
not only...but also 不仅??而且
both...and 两者都
neither...nor 既不??也不??
either...or 或者??或者
并列连词在实际运用中最重要地是要做到左右两边平衡:
1. 单词+并列连词+单词
We both shrugged and laughed. 我们两人都耸耸肩,笑一笑。
He came and sat down and spoke to me. 他进来,坐下和我说话。
We felt hot, tired and thirsty. 我们觉得又热,又累,口又干。
He is healthy and handsome. 他既健康又帅气。
2. 短语+并列连词+短语
The butterflies flew over our heads and about the flowers. 蝴蝶在我们头上飞,在花丛中飞。
3. 从句+并列连词+从句
I know that he has been arrested and that he is in prison. 我知道他被捕而且坐牢了。
4. 分句+并列连词+分句
I played the piano and she sang. 我弹钢琴,她唱歌。
5. 其他
I declared this seriously and with confidence. 我严肃而且自信地做出声明。(单词+并列连词+短语)
Let's take him to hospital or something. 咱们送他去医院或做点什么。(分句+并列连词+单词)
注意:
and, both...and 连接两个可数名词时,一般谓语用复数;or, either...or, neithe
r...nor, not only...but also...谓语的数以谓语自身旁边的主语为准。
Both salt and sugar dissolve easily. 盐和糖均易溶解。
Not only the students but also the teacher is enjoying the film. 不仅学生而
且老师都在津津乐道地看着电影。
Neither the students nor the teacher knows anything about it. 同学们和老师
对此都一无所知。
Neither he nor they are wholly right. 他和他们,谁都不是完全对的。
Either he or I am right. 或者他对,或者我对。
英语里有一些连接副词,这类具有连接作用的副词又叫做准连词。
besides 此外
I am too tired to go; besides, it's too late.
我很累不能去,此外,天色也晚了。
hence 因此
My mother is by herself; hence I must go home now.
我妈妈独自一人在家,因此我现在必须回去了。
meanwhile 与此同时
Mother went shopping; meanwhile I cleaned the house.
母亲去购物,与此同时我打扫房间。
moreover 此外
Bicycling is good exercise; moreover, it won't pollute the air.
骑自行车是一种很好的运动,此外,还不污染空气。
then 此外,还有
I was there; then there were my mother and father.
我在那儿,此外,我的爸爸妈妈也在那儿。
therefore 因此
I think; therefore I am.
我思故我在。
thus 因此
It's late, and thus you must go.
天晚了,因此你必须走。
下面来看几个连接副词在作副词和连词时的区别:
However
however 作副词时,可位于形容词/副词之前:
You couldn't earn much, however hard you worked.
无论你干得多卖力,你都挣不了多少钱。
however 作连词时通常意为“但是”,可位于它所引导的从句之前或之后,或位于第一
个词或短语之后:
I'll offer it to Tom. However, he may not want it. / He may not want it how
ever. / Tom, however, may not want it.
我将提出把这个给汤姆,然而他可能不要它。
但提到两句意义相反的话时, however意为“但是/仍然/同样”:
They hadn't trained hard, however ( / but / nevertheless / all the same) th
ey won.
他们并没有刻苦训练,但/无论如何/仍然/同样获胜了。
Otherwise
otherwise 作为副词时常常位于动词之后:
It must be used in a well-ventilated room. Used otherwise it could be harmf
ul.
必须在通风条件好的房间里使用。如不这样使用则可能是有害的。
otherwise 作连词时意为“要是不/否则”:
We must be early; otherwise we won't get a seat.
我们得早点去,否则我们就没有座位了。
在英语口语中,这里也可用or:
We must be early or(else)we won't get a seat.
我们得早点去,否则我们就没有座位了。
So
so 作程度副词,位于形容词/副词之前:
It was so hot that...
天气太热了,因而??
They ran so fast that...
他们骑得太快了,因而??
so 作连词时位于它所引导的从句之前:
Our cases were heavy, so we took a taxi.
我们的箱子太重了,所以我们要了辆出租车。
Still & Yet
still 和 yet 可作时间副词:
The children are still up. They haven't had supper yet.
孩子们还没上床睡觉/醒着。他们还没吃晚饭呢。
still 和 yet 作连词时位于它们所引导的从句之前。still 意为“虽承认某事/尽管如此”;yet 意为“不管,不顾/同样/尽管如此”。
It's raining; still I'd like to go.
天下着雨,尽管如此,我还是要去的。
They are ugly and expensive; yet people buy them.
它们既难看又昂贵,但人们还是买。
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1. 及物动词
后面必须跟宾语意义才完整的实义动词,叫做及物动词(transitive verb)。有的动词必须接一个宾语,有的必须接两个宾语。如:
He's reading a magazine. 他正在读一本杂志。(单宾语)
Mr Zhang teaches us English. 张老师教我们英语。(双宾语:us是间接宾语,English是直接宾语)
2. 不及物动词
本身意义完整后面不须跟宾语的实义动词,叫做不及物动词(intransitive verb)。
如:
It happened in June 1932. 这件事发生于一九三二年六月。
He is looking around. 他环顾四周。
如果想接宾语,动词后面必须加上介词:
False: He is looking me.
Right: He is looking at me.
*注意:不及物动词没有被动语态。
3. 兼作及物动词和不及物动词
英语里有不少实义动词可以兼作及物动词和不及物动词。这样的动词又有两种不同的情况:
a) 兼作及物动词和不及物动词时,意义不变。试比较:
Shall I begin at once? 我可以立刻开始吗,(begin作不及物动词)
She began working as a librarian after she left school. 她毕业后当图书馆管理员。(begin作及物动词)
When did they leave Chicago? 他们是什么时候离开芝加哥的,(leave作及物动词)
They left last week. 他们是上周离开的。(leave作不及物动词)
b) 兼作及物动词和不及物动词时,有时意义不尽相同。试比较:
Wash your hands before meals. 饭前要洗手。
Does this cloth wash well? 这布经得起洗吗,
If you work hard, you will succeed. 如果你努力工作,你会成功的。
If you work hard, you will succeed John as the manager of this company. 如果你努力工作,你会接任约翰成为公司的经理。
4. 与汉语的比较
有时英语动词的及物和不及物的用法,与汉语的用法不一样,请注意下列两种情况:
a) 有的动词在英语里只能用作不及物动词,而汉语则可用作及物动词,如 arrive(到达),agree(同意),listen(听),英语里这些动词后面常接介词:
We arrived at the railway station at noon. 我们于中午到达火车站。(at不能省去)(比较:We reached the railway station at noon.)
Everybody listened to the lecture with great interest. 每个人都很有兴趣地听讲课。(to不可省去)(比较:We all heard the lecture.)
Do they agree to the plan? 他们同意这个计划吗,(to不可省去)
b) 有的动词在英语里能用作及物动词,而在汉语里则不能用作及物动词,如 serve(为??服务):
Our children are taught to serve the people wholeheartedly. 我们的孩子被教以全心全意为人民服务。
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一、延续性动词和非延续性动词的概念
英语中,动词按其动作发生的方式、动作发生过程的长短,可分为延续性动词和非延续
性动词。
延续性动词表示能够延续的动作,这种动作可以延续下去或产生持久影响。如:learn,
work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live,
stay等。
非延续性动词也称终止性动词、瞬间动词或短暂性动词,表示不能延续的动作,这种动
作发生后立即结束。如:open, close, finish, begin, come, go, arrive, reach, get
to, leave, move, borrow, buy等。
二、延续性动词的用法特征
1. 延续性动词可以用于现在完成时,其完成时态可与表示“时间段”的状语连用。
表示时间段的短语有:for+一段时间(eg: for two years), since从句(eg: since
he came here), since+时间点名词(eg: since last year), during the past three years, how long, for a long time等。
例:I have learned English since I came here. 自从我来到这儿就学习英语了。
2. 延续性动词不能与表示短暂时间的“时间点”状语连用。
如:It raind at eight yesterday morning.(误)rain为延续性动词,而at eight表示“时间点”,前后显然矛盾。
如果要用延续性动词表示一瞬间的动作,可以借助come, begin, get等非延续性动词来表示。上句可改为:It began to rain at eight yesterday morning.
又如以下这段对话:
-When did you get to know Jack? 你什么时候认识Jack的,
-Two years ago. 两年前。
-Then you've known each other for more than two years. 也就是说你们俩认识两年多了。
-That's right. 没错。
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1. 非延续性动词可用来表示某一动作完成,因此可用于现在完成时。如:
The train has arrived. 火车到了。
Have you joined the computer group? 你加入电脑小组了吗,
2. 非延续性动词表示的动作极其短暂,不能持续。因此,不可与表示一段时间的状语连用(只限肯定句)。如:
(1) 他死了三年了。
误:He has died for three years.
正:He has been dead for three years.
正:He died three years ago.
正:It is three years since he died.
正:Three years has passed since he died.
(2) 他来这儿五天了。
误:He has come here for five days.
正:He has been here for five days.
正:He came here five days ago.
正:It is five days since he came here.
正:Five days has passed since he came here.
(1)、(2)句中的die、come为非延续性动词,不能与表示“时间段”的状语连用。那么,应如何正确表达呢,可以采用下面的四种方法:
a. 将句中非延续性动词转换为相应的延续性动词,如上面两例中的第一种正确表达方式。下面列举几例:leave?be away, borrow?keep, buy?have, begin/start?be on,
die?be dead, move to?live in, finish?be over, join?be in/be a member of, op
en sth.?keep sth. open, fall ill?be ill, get up?be up, catch a cold?have a
cold。
b. 将句中表示“时间段”的状语改为表示过去确定时间的状语,如下面两例中的第二种正确表达方式。
c. 用句型"It is+段时间+since..."表达原意,如上面两例中的第三种正确表达方式。
d. 用句型"时间+has passed+since..."表达原意,如上面两例中的第四种正确表达方式。
3. 非延续性动词可用于现在完成时否定式中,成为可以延续的状态,因而可与表示“时间段”的状语连用。如:
He hasn't left here since 1986. 从1986年以来他就没离开过这里。
I haven't heard from my father for two weeks. 我已经两周没收到我父亲的来信了。
4. 非延续性动词的否定式与until/till连用,构成"not+终止性动词+until/till..."的句型,意为“直到??才??”。如:
You can't leave here until I arrive. 直到我到了,你才能离开这里。
I will not go to bed until I finish drawing the picture tonight. 今天晚上直到我画完画,我才去睡觉。
5. 非延续性动词可以用于when引导的时间状语从句中,但不可以用于while引导的时间状语从句中。
因为when表示的时间可以是“时间点”(从句谓语动词用非延续性动词),也可以是“时间段”(从句谓语动词用延续性动词);而while表示的是一个较长的时间或过程,从句谓语动词要用延续性动词。如:
When we reached London, it was twelve o'clock.(reach为终止性动词)
Please look after my daughter while/when we are away.(be away为延续性动词短语)
6. 终止性动词完成时不可与how long连用(只限于肯定句)。如:
误:How long have you come here?
正:How long have you been here?
正:When did you come here?
连系动词及系表结构
连系动词也称系动词,它本身有词义,但不能单独用作谓语,后边必须跟表语共同构成复合谓语。
连系动词与其后的表语合起来叫作系表结构。系表结构说明主语的状况、性质、特征等情况。
一、状态系动词
用来表示主语状态,只有be一词。例如:
He is a teacher.
他是一名教师。(is与表语一起说明主语的身份。)
二、持续系动词
用来表示主语继续或保持一种状况或态度,主要有keep,remain,stay,lie,stand。例如:
He always kept silent at meeting.
他开会时总保持沉默。
This matter remains a mystery.
此事仍是一个谜。
三、表像系动词
用来表示“看起来像”这一概念,主要有seem,appear,look。例如:
He looks tired.
他看起来很累。
He seems (to be) very sad.
他看起来很伤心。
四、感官系动词
感官系动词主要有feel,smell,sound,taste。例如:
This kind of cloth feels soft.
这种布手感很软。
This flower smells very sweet.
这朵花闻起来很香。
五、变化系动词
这些系动词表示主语变成什么样,主要有become,grow,turn,fall,get,go,come,run。例如:
He became mad after that.
自那之后他疯了。
She grew rich within a short time.
她没多长时间就富了。
六、终止系动词
表示主语已终止动作,主要有prove,turn out,表达“证实”,“变成”之意。例如:
The rumor proved false.
这谣言证实有假。
The search proved difficult.
搜查证实很难。
His plan turned out a success.
他的计划终于成功了。(turn out表终止性结果)
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情态动词
情态动词有一定的词义,但词义不完全,须同动词原形连用;
情态动词没有人称和数的变化;
疑问句直接把情态动词提前,否定句在情态动词后面加not。
*情态动词中有一类是具有情态动词特征的词,如have to,但它有人称、数的变化,它的疑问句和否定句的构成方式也和其他情态动词有所不同。
can 的用法
一、表能力,有“能,会,能够”的意思。例如:
-Can you drive a car? 你会开车吗,
-Yes, I can. 我会。/ No, I can't. 我不会。
二、表允许,在口语中代替may,有“可以”的意思。
(见下面 may 的用法第四点)
三、表示可能性,常用于否定句和疑问句。例如:
Can it be true? 那会是真的吗,
Today is Sunday. He can't be at school. 今天是星期天,他不可能在学校里。
很多同学都不太清楚 can 与 be able to 的异同吧,赶快来学习一下吧>>
may 的用法
一、表示许可或征求对方的许可,有“可以”的意思。例如:
You may go now. 你可以走了。
May I use your computer? 我用一下你的电脑可以吗,
二、回答以 may 开头的疑问句有如下表达法:
-May I smoke here? 我可以在这儿抽烟吗,
-Yes, you may. / Yes, please. 请抽吧。
-No, you can't. / No, you mustn't. / No, you'd better not. 请不要抽烟。
三、表示猜测,通常只用于陈述句。例如:
You may be right. 你可能是对的。
四、在口语中 can 可以代替 may 表示许可,但 can 较随便,may 更正式。例:
Can I use your bike, John? 约翰,我可以用一下你的自行车吗,
May I have a look at your license please, sir? 先生,我可以看一下你的执照吗,
must 的用法
一、表义务,“必须”。例如:
You must talk to them about their study. 你必须同他们谈谈关于他们学习的事。
二、在否定结构中表不许。例如:
You mustn't leave here. 你不能离开这儿。
三、表推测,暗含有很大的可能性。例如:
He must be ill. He looks so pale. 他肯定是病了。他的脸色那么苍白。
注意:之前我们说过 may 也可以表猜测,但是 may 暗含的可能性较小,must 暗含的可能性较大。另外否定的猜测是用can't。例如:
The baby can't be ill. He is so active. 那宝宝不大可能是病了。他那么活跃。
四、表不可避免,“必然要,必定会”。例如:
All men must die. 人总有一死。
五、表主张,“坚持要,一定要”。例如:
If you must go, at least wait till the rain stops. 如果你坚持要走,至少也要等雨停了再走。
六、关于 must 的简短回答:
-Must I clean the dining room at once? 我必须马上打扫膳厅吗,
-Yes, you must. 是的。
-No, you needn't. / No, you don't have to. 不必马上打扫。
have to 的用法
一、have to 表客观的需要和义务,must 表主观的认识。例如:
I missed the train, so I had to take a taxi. 我没搭上火车,所以我只得打的。(客观上需要打的)
I must study hard. 我必须努力学习。(主观上认为应该努力学习)
二、在疑问句和否定句中,have to 多用助动词 do 构成,must 则直接提前或加not。例如:
Did he have to do it? = Must he do it? 他得做那件事吗,
而且在否定句中,have to 表不需要,must 表不允许:
You don't have to go there. 你不需要去那儿。
You mustn't go there? 你不可去那儿。
点击查看英语语法专题,阅读更多相关文章~
1) 一个修路队修1250米长的路,已经修了20天,平均每天修50米,余下的计划在10天内完成,平均每天要修多少米,
(1250-20*50)/10=25
2) 小明在商店买了5支铅笔和4本作业本,共付出2.50元,已知每支铅笔0.12元,每本作业本多少元,
(2.5-0.12*5)/4=4.75
3) 东风小学四年级有学生125人,五年级学生人数比四年级学生人数的2倍少6人,四年级和五年级共有多少人,
125+125*2-6=369
4) 水泥厂要运走42吨水泥,每天运2.5吨,运了6天后,余下的每天运3吨,余下的还要几天才能运完,
(42-2.5*6)/3=9
5) 某厂要制造一批机床,计划每天生产64台,15天可以完成,实际提前3天完成任务,实际每天比计划多生产多少台机床,
64*15/12-64=16
6) 一个煤矿上半年原计划产煤66万吨,实际每月比原计划多生产2.2万吨,照这样计算,完成上半年生产计划要几个月,
66/(66/6+2.2)=5
7) 服装厂原来做一套衣服用布2.5米,采用新的方法裁剪后,每套衣服可以节约用布0.1米,原来做120套衣服的布,现在可以做衣服多少套,
120*2.5/2.4=125
8) 红山小学15天收集树种180千克,比原计划提前5天完成任务,实际每天比原计划每天多收集树种多少千克,
180/15-180/20=3
9) 装订小组装订一批图书,第一天装订了750本,第二天装订了800本,第二天比第一天多得20.5元装订费,第一天得装订费是多少元,
20.5/(800-750)*750=307.5
10) 每千克煤油得价格是3.5元,一桶煤油连桶重8千克,卖出煤油的一半后,余下的煤油连桶共重4.5千克,这桶煤油共能卖多少元,
(8-4.5)*2*3.5=24.5
11) 炼钢厂去年上半年炼钢36万吨,下半年比上半年多炼10.8万吨,去年平均每月炼钢多少万吨,
(36+36+10.8)/12=6.9
12) 某化肥厂在一周里,前4天共生产化肥97吨,后3天平均每天生产化肥26吨,这一周平均每天生产化肥多少吨,
(97+26*3)/7=25
1,一块梯形菜地7/8公顷,其中1/4种西红柿,2/5种黄瓜,其余的种萝卜,种萝卜的占几分之几,
2修一条2000米的路,第一天修了150米,第二天修了全长的1/4,第三天修了100米,还剩全长的几分之几没修,
3,某工程队修一条公路,修了一段后,剩下的比修了的2倍多50米,已知还剩下650米没修,这条路全长是多少米,
4,小朋友分糖果,每人分4粒,则多9粒,每人分5粒,则少6粒,问:有多少个小朋友,有多少粒糖果,
5,有两堆煤,甲堆4.5吨,乙堆6吨,甲每天用去0.36吨,乙每天用去0.51吨,几天后两堆剩下的煤相等,
6,甲、乙两车分别从AB两地相对开出,甲车每小时行的是乙车的1.5倍,3小时后两次相遇,这时甲车超过中点60千米,求甲乙两车每小时给行多少千米, 7,同学们带着水果去敬老院看望老人,带苹果的个数是桔子的3倍,如果每位老人拿2个桔子和4个苹果,那么,桔子正好分完,苹果还余下14个。同学分把水果分给了几位老人,苹果多少个,
8,一个正方形,一边减少6厘米,另一边减少2厘米,面积减少68平方厘米,原来正方形的边长为多少厘米,
9,体育场的跑道,它的周长是234.2米,半圆的直径为多少米,
最佳答案
我是能仁之士,让我来帮你吧!(看我这么辛苦的份上,多给我几十分吧!) 1.解:设种萝卜的占X
1-X=1/4+2/5
X=1-1/4-2/5
X=7/20
2.解:设还剩全长的X没修
150/2000=3/40 100/2000=1/20 1-X=3/40+1/20
X=1-3/40-1/20
X=7/8
3.解:设这条路全长是X米
(650-50)/2=300
X-300=650
X=300+650
X=950
4.解:设有X个糖果.
(9+6)/(5-4)=15......小朋友个数
X-15*4=9
X=60+9
X=69
5.解:设X天后两堆剩下的煤相等 (6-4.5)/X=0.51-0.36
X=1.5/0.15
X=10
6.解:设甲车每小时行X千米 60/3=20 20/1.5=40/3......乙速 X/(40/3)=1.5 X=(40/3)*1.5 X=20
7.解:设有X个苹果
(0+14)/(4-2)=7....老人个数 X-14=4*7
X=14+28
X=42
8.解:设原来正方形的边长为X厘米 (2+6)X/2=68 4X=68
X=17
9.解:设
范文三:英语作文写作常用的连词有哪些
英语作文写作技巧:英语作文逻辑连贯的必
杀技——过渡词 众所周知,要写出清晰流畅的文章,需要把文章中各部分巧妙地连接在一起。 这样可使文章自然而别致,并能层层展开主题句,完整地表达中心思想。 而过渡词(Transitional Words)是连接这些部分的纽带。 过渡词是一种关系指引词,一般由副词或起副词作用的短语承担。 此外,代词、连词、上下文的近义词等也可作过渡词。 过渡词能使文章启、承、转、合,融会贯通,连成一体。 1.根据意思和作用的不同,过渡词可以分为以下十五类
(1)表并列关系的过渡词:
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and, also, as well, as well as, or, too, not only…but also..., both … and..., either … or..., neither…nor...
(2)表递进关系的过渡词:
besides, in addition(除此之外,而且), moreover(此外,而且), what’s more, what’s worse
(3)表转折对比的过渡词:
but, however, yet, instead, on the other hand, on the contrary, although, different from, despite, in spite of, whereas, unlike, nevertheless, years ago…today, this…that..., the former…the latter, then…now..., the first… whereas the second..., once…now..., on the one hand … on the other hand, some…others
(4)表原因的过渡词:
because, because of, since, as, for, now that, thanks to, due to(由于)
(5)表结果的过渡词:
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so, thus, therefore, as a result, so that, then, thereby, hence, so…that..., such…that...
(6)表条件的过渡词:
if, unless, on condition that, as/so long as
(7)表时间的过渡词:
when, while, after, before, until, as soon as, later, afterwards, soon, lately, recently, since, from then on, eventually, in the meantime, then, suddenly, at the same time, next, early this morning / year / century, after a while, in a few days, now, presently, finally, at last, all of a sudden, form now on, at present, immediately, the moment
(8)表特定的顺序关系的过渡词:
first, firstly, second, secondly, third, thirdly, above all, first of all, then, next, finally, in the end, at last, afterward(s)(后来), meanwhile(几乎同时), thereafter(在那以后), last, finally, eventually(终于)
(9)表换一种方式表达的过渡词:
in other words, that is to say, to put it another way
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(10)表进行举例说明的过渡词:
for instance, for example, like, such as
(11)表陈述事实的过渡词:
in fact, actually, as a matter of fact, to tell you the truth
(12)表强调的过渡词:
certainly, indeed, above all, surely, most importantly, in fact, no doubt, without any doubt, truly, obviously
(13)表比较的过渡词:
like, unlike, in the same way, similarly, similar to...
(14)表目的的过渡词:
for this reason, for this purpose, so that, in order to, so as to
(15)表总结的过渡词:
in a word(总之,简言之), in general, in short(总之), above all, after all, generally speaking, to sum up, finally, in conclusion, at last, in summary 下载更多高中英语学习资料、高考绝密复习总结资料,请关注微信账号:高中英语 gaozhong-yingyu ;高考 gaokao010 ;打开微信搜索关注一下账号你就可免费获取!
2. 文章段落之间的逻辑关系主要由过渡词来完成,在修辞中称为启、承、转、合。
“启”就是开头, “承”是承接,“转”是转折,“合”是综合或总结。
(1)用于“启”的过渡词语 用于表示“启”的过渡词或过渡性
语句通常用在段落或文章的开头:
first, first of all, at first, in the first place, firstly, to begin with, to start with, recently, now, at present, in recent years, in general, generally speaking, at present, lately, currently,
It is often said that…, As the proverb says…,
It goes without saying that…,
It is clear/obvious that…,
Many people often ask …
(2)用于“承”的过渡词语 表示“承”的过渡词或过渡性的语句通常用在段落中的第一个扩展句中:
second, similarly, in addition, besides, then, furthermore, moreover, what is more, what is worse, for example, for instance, certainly, surely,
obviously, in other words, especially, particularly, in particular, indeed, still, third, truly, in fact, at the same time, no doubt,
It is true that…,
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Everybody knows that…,
It can be easily proved that…,
No one can deny that…,
The reason why …is that …,
There is no doubt that…,
To take…for an example (instance) …,
We know that…,
What is more serious is that…
(3)用于“转”的过渡词语 用于“转”的过渡词或过渡性的语句通常用在段落中的第二个扩展句中:
but, however, on the other hand, on the contrary, in contrast, in any case, at any rate(无论如何), nevertheless(虽然如此), otherwise, or, or else, while, whereas, but, despite, in spite of ..., yet, instead,
I do not believe that…,
Perhaps you’ll ask why…,
That’s why I feel that…,
This may be true, but we still have a problem with regard to…,
Though we are in basic agreement with …, yet differences will be found...
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(4)用于“合”的过渡词语 用于“合”的过渡词或过渡性的语句通常用在段落的结论句或文章的结论段中:
in a word, in general, in short, above all, after all, generally speaking,to sum up, finally, in conclusion, at last, in summary, therefore, as a result, above all, thus,after all(毕竟), eventually, hence, in short, in conclusion, in a word, in sum(总之), on the whole(就整体而言), to sum up
From this point of view …,
On account of this we can find that …
The result is dependent on …,
Thus, this is the reason why we must…
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范文四:英语的时态都有哪些呢
外教一对一 http://www.yangjiajiao.com
英语的时态都有哪些呢?
过去时——现在时——将来时
过去进行时——现在进行时——将来进行时
过去完成时——现在完成时——将来完成时
过去完成进行时——现在完成进行时——将来完成进行时
根据时间的轴线, 大体上可以分为以上12种时态。接下来, 我们用一个情境来展示不同的时态所表现出来的不同含义。 He studied Physics.
他学习了物理。
He studies Physics.
他学习物理。
He will study Physics.
他将要学习物理。
He was studying Physics at this time last summer.
他去年夏天的这个时候在学物理。
He is studying Physics now.
他现在正在学物理。
He will be studying Physics when you enter his room.
当你进入他的房间时, 他应该在学物理。
He had studied Physics before he graduated.
他在毕业之前已经学习了物理。
He has studied Physics for three years.
他已经学习物理长达3年了。
外教一对一 He will have studied Physics when we meet him. http://www.yangjiajiao.com
当我们见到他的时候, 他应该已经学了物理。
He had been studying Physics till midnight.
他一直学习物理到午夜。
He has been studying Physics during his stay here.
当他在这里的时候, 他一直在学物理。
He will have been studying Physics for five months by next Sunday. 到下周日为止, 他就连续学习物理5个月了。
范文五:英语职称考试都有哪些
英语职称考试都有哪些
人在江湖,考多点证是有帮助的,特别是英语资格证。那么,英语职称考试都有哪些,一起来看看。
按职称的系列、级别分为A、B、C三个等级,专业人员按规定的级别任选一个语种参加考试。其中英语又按照专业不同分为分英语综合、英语理工、英语卫生三个类别。
(一)A级
1、高教、科研、卫生、工程、农业系统列申报高级;
2、申请报高级国际商务师;
3、其它系列申报正高级。
(二)B级
1、工程、农业、卫生系列的县属(含县)以下单位工作人员申报高级;
2、高教、科研、卫生、工程、农业系列申报中级;
3、翻译系列申报高级第二外语;
4、高级未分正副的系列(不含工程系列)审报高级;其它系列申报副高级。
(三)C级
1、除翻译系列外,申报高级第二外语;
2、翻译系列申报中级第二外语;
3、工程、农业、卫生系列在县属(含县)以下单位工作人员申报中级;
4、其它系列申报中级。
要想通过考试,得掌握一定程度的单词量,另外买一本辅导用书,每天坚持做一两篇阅读理解。虽然考试能带字典进去,但单词还是要多背的,指望查字典考试的时间就不够用啊~祝考试成功~
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