连词语法讲解

( 同时发生的动作,但是描述性不强用 as ; 短背景短动作也用as )
C) hardly…when / no sooner…than 经常用倒装句式 Hardly had I entered the room, when I heard a loud noise. No sooner had I entered the room, than I heard a loud noise. D)注意下列句式所表示的含义
We find it necessary that we practice spoken-English.（带复合结构） I am sure that he will succeed. （表语形容词宾语） He is sure to come except that he has something more important to do. （介词宾语）
（由 why 引起的问句只能用 because 回答）
It must have rained last night, for the ground is wet. （该句不是状语从句而是并列句。分句只表明“说话”的原因而不 是 事物发生的原因；有时也用来表示“显而易见无须说明的原因”， 那 时类似于“状语从句”。）
B) 当一个谓语动词后接多个宾语从句时, 最后一个不能省略 He said (that) he became a teacher 30 years ago and that he had been teaching in this school since then. C) 带复合宾语的从句 We find it necessary that we practice spoken-English. D) 在一些容易引起误解的动词后 I see that Einstein is a great scientist. （了解；领会）
wk.baidu.com连 词
连词是一种连接单词，短语，或句子的虚词，没有句子重音， 也不能单独做句子成分 并列连词 一.连词的种类 从属连词
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并列连词
并列连词用来连接平行的单词, 短语或分句
Tom and Joan are both English. ( 连接单词) You catch that monkey and give me his heart to eat. ( 连接短语)
It is interesting that you should like him.
2) 表语从句 The question is who can complete the difficult task.
He looked as if he was going to cry.
3) 宾语从句
We can learn what we did not know.（及物动词宾语）
注意下列句型中连词 whether 和 that 的用法 I doubt whether he will come soon. I do not doubt that he will come soon. Do you doubt that he will come soon? I’m sure that he will come soon.
4 ）条件状语从句
常用的连词有： if / unless / as (so) long as / in case / now that 等 条件从句用现在时表示将来，用过去时表示过去将来 As long as I live, I shall work hard. I shall not go to school unless I finish my homework. 5）让步状语从句 常用连词有： although / though / as / even if (though) / while / however /whatever / no matter who ( how…) 等 Although it rained heavily, they still went out. No matter who asks her for advice, she is always ready to help. Clever as he is, he doesn’t study well. (由 as 引起的从句要倒装。单数名词作表语倒装到句首时不能用 不定冠词） Child as he is, he knows a lot.
从属连词用来引导从句 二.名词性从句 在名词性从句中常用的连词有: that / if / whether / as if / who / what
/ which / whose / when / where / how / why 等
1).主语从句 Who did that is known to all.
若主句动词为过去时, 从句必须用表示过去时间的某个时态 who taught you English. I didn’t know
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who had taught you English the last term. who would teach you English next term. who was teaching you English then.
It’s three years since I came here. ( 暂短性动词)
It’s three years since I lived there. ( 延续性动词)
2) 地点状语从句 常用连词有 where / wherever
I want to go where I am most needed. We should go wherever we are most needed.
B) when / while / as 的比较
While ( When ) the students were reading, the teacher came in. ( 长背景短动作) When the teacher came in, the students were reading. (短背景长动作) While the students were reading, the teacher was writing something on the blackboard. (长背景长动作) As he walked along the street, he sang happily.
6）结果状语从句 常用连词有： so / so that / so…that / such…that / 等
The box is so heavy that nobody can move it.
It is such a heavy box that nobody can move it. so / such 短语在句首要倒装 So heavy is the box, that nobody can move it. Such a heavy box is it, that nobody can move it.
但是 : The teacher said that the earth moves round the sun.
宾语从句中不能省略 that 的地方
A) 当主句的谓语动词与从句的主语被其它成分隔开的时候 He said angrily that he had never done that.
He said that when he had time, he would go to see you.
I’m not sure whether he will come soon.
三. 副词性从句（状语从句） 1) 时间状语从句 A) 常用连词有: when / as / while / before / after / since / once /
so far as / till (until ) / as soon as / hardly…when / no sooner…than /
This is Kate and that is Joan. ( 连接句子 )
常用的并列连词有: and / but / or / so / for / and yet / when / while / not only…but also / either…or / neither…nor / 等
从属连词
7) 目的状语从句
常用连词有：so…that / so that / in order that / 等 目的状语从句中必须含有一个情态动词 They started so early that they might arrive in time. He works hard in order that he can serve the country well.
注意地点状语从句和定语从句的区别 I want to go to the place where I am most needed. (定语从句)
3) 原因状语从句 常用连词有 because / since / as As (Since / Because) it is snowing, we shall not go to the park. ( 由 as / since 引起的从句通常在句首） Why did he not come to school? Because he was ill.
the moment / every time / each time / the first time / the last time / by the time 等 注意: 时间状语从句中用现在时表示将来,用过去时表示 过去将来 I’ll go on with the work when I come back tomorrow.
8）方式状语从句
常用连词有： as / just as / as if / as though 等 Please do just as what I did.
The old man runs very fast as if (though) he were a young man.（由 as if 和 as though 引起的从句通常要虚拟） 9）比较状语从句 常用连词有：as…as / than / not so (as)…as… / the more…,the more
4)同位语从句 The news that our team has won the match is true. 注意: if 和 whether 在名词性从句中的区别.下列情况不用 if The question is whether the film is worth seeing. (表语) The news whether our team has won the match is unknown. (同位语) Whether we shall attend the meeting hasn’t been decided yet.(主语) It hasn’t been decided whether (if) we shall attend the meeting. (有形式主语时就可以用 if ) It all depends (on) whether they will support us. (介词宾语) He doesn‘t know whether to stay or not. (接不定式) We didn’t know whether or not she was ready.(与 or not 连用)
时态的呼应: 若主句动词为现在时或将来时, 从句可以用任何时态 who teaches you English.
I don’t know
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who taught you English last term. who will teach you English next term.
who has taught you English these years.