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一、以形式主语it引导的句型。
句型1.
It (so) happened（chanced） that +clause. = sb. happened /chanced to do sth. =sb.did sth.
by chance. 如：
It happened that he was out when I got there. 当我到那儿时，碰巧他不在。＝He happened to be
out when I got there.= It chanced that he was out when I got there= He was out by chance
when I got there.
句型2.
It seems that sb. do/ be doing/ have done/ had done= Sb. seems to do/ be doing/ have
done/to be done/to have been done（还有动词appear等可这样使用）如:
It seemed that he had been to Beijing before.他好象以前去过北京。＝He seemed to have been
to Beijing before.
句型3.
It is / was＋被强调的部分＋that(who)+剩余的部分.如：
It wasn't until he came back that I went to bed.直到他回来我才睡觉。(一定要注意被强调句型中
的谓语动词否定的转移)。 It was because he was ill that he didn't come to school today.只因
为他有病了今天没有来上学。（只能用because而不能用for, as 或since）
It is I who am a student. 我确实是个学生。（句中am不能用are来代替。）
句型4.
It is high time (time/ about time)+ (that) 主语＋should do / did+其它。（从句中的谓语动词用
的是虚拟语气。）如:
It is high time that we should go / went home.我们该回家了。
句型5.
It is / was said ( reported…)＋that+从句. 如：
It was said that he had read this novel.据说他读过这篇小说。＝He was said to have read this
novel.
句型6.
It is impossible / necessary/ strange…that clause.(从句中的谓语用should＋do / should have
done，其形式是虚拟语气。)如：
It is strange that he should have failed in this exam.真奇怪，他这次考试没有及格。
句型7.
It is + a pity/ a shame…that clause.(注意从句中的谓语动词用should do或should have done的形
式，但should可以省略。)如：
He didn't come back until the film ended. It was a pity that he should have missed this
film. 他直到电影结束才回来。他没有看到这部电影真可惜。
句型8.
It is suggested / ordered/ commanded /…that +clause.(从句的谓语动词用should do, 但should可
以省略。)如：
It is suggested that the meeting should be put off.有人建议推迟会议。
句型9.
It is/was＋表示地点的名词＋where+从句。（注意本句不是强调句型，而是以where引导的定语从句。
）如：
It was this house where I was born.请比较：It was in this house that I was born.(后一句是强
调句型。)
句型10.
It is / was +表示时间的名词＋when+从句。（注意本句型也不是强调句型，而是以when引导的定语从
句。）如：
It was 1999 when he came back from the United States. 请比较：It was in 1999 that he came
back from the United States.
句型11.
It is well-known that＋从句。如：
It is well-known that she is a learned woman.众所周知，她是个知识渊博的妇女。
句型12.
It is +段时间＋since+主语＋did. 请比较：
It was +段时间＋since+主语＋had done. 如：
It is five years since he left here.他已经离开这儿五年了。
It was five years since he left here.（同上）
注意下列句型的翻译:It is five years since he lived here.他从这儿搬走已经有五年了。
句型13.
It +谓语＋段时间＋before+主语＋谓语.（ before引导的是时间状语从句。） 如：
It wasn't long before the people in that country rose up.没有多久那个国家的人民就起义了。
It will be three hours before he comes back.三个小时之后他才能回来。
句型14.
It is +形容词(possible, impossible, necessary等) ＋for+ sb.+ to do. 如：
It is impossible for me to finish this work before tomorrow.我明天之前完成此工作是不可能的
。
句型15.
It is +（心理品质方面的）形容词＋of + sb. +to do.= 主语+ be +形容词＋to do.(常用的形容词有
：kind, stupid; foolish, good, wise等。)如：
It is kind of you to help me.＝You are kind to help me.你真好给我提供了帮助。
二、定语从句：
句型16.
由as引导的非限定性的定语从句。如：
As we have known, he is a most good student.众所周知，他是个很好的学生。请比较：It is well
-known that he is a most good student.（前一个是定语从句，而后者是个主语从句。）
句型17.
由which引导的非限定性的定语从句。如：
He is a professor, which I have been looking forward to becoming. 他是个教授，那是我一直盼
望的职业。（因为先行词professor是表示职业的名词，因此引导词用which，而不用who。
句型18.
由where, when引导的定语从句（其中包括限定性的或非限定性的。）如：
This is the house where I used to come.请比较：This is the house which / that I used to
come to.
This is the day when I joined the Party.请比较：This is the day which / that I joined the
Party on.
（说明：关于that与which之间的区别，请看关系代词that和which的区别。）
三、让步状语从句
句型19.
No matter what / which / who / where / when / whose＋从句，＋主句.(注意从句中的时态一般情况
下用一般现在时态。)如：
No matter what you do, you must do it well.请比较：Whatever you do, you must do it well. 无
论你做什么，一定要做好。
No matter where you go, please let me know.请比较：Wherever you go, please let me know.你无
论去哪儿，请通知我。
（说明：这两种句型形式不同，而意义完全相同。）
（注意：I will tell whoever would like to read it. 句中的whoever不能用whomever来代替。因为
它即作动词tell的宾语，又作后面从句的主语。）
四、条件状语从句
句型20.
When / So long as / As long as / Once +从句，＋主句。（从句也可以放在主句之后。）如：
As long as you give me any money, I will let you go.只要你给我一些钱，我就让你走。
Once you have begun to learn English, you should learn it well. 一旦你开始学习英语，你应该
把它学好。
句型21.
主句＋on condition that+从句.如：
I will go with you on condition that you give me a sum of money.我和你一起去的条件是你给我
一些钱。
句型22.
主句＋unless+从句.(注意：由于unless本身是否定词，所引导的从句的谓语动词用肯定而不用否定。)
如：
I will go there tomorrow unless it rains.我明天去那儿除非下雨。
句型23.
祈使句，＋and/ and then+主句。（注意：祈使句也可用一个名词短语。）如：
Use your head, and you will find a good idea.动脑筋想一想，你就会想出一个好主意。
Another word, and I will beat you.你再说一句，我就揍你。
句型24.
If +necessary / impossible/ important等，＋主句.(注意：if与形容词之间的it is被省略。)如：
If necessary, I will do it. 如果有必要的话，我来做此事。
五、原因状语从句
句型25.
主句＋in case+从句.（in case表示以免）如：
I will take my raincoat in case it rains.我要把雨衣带上以免下雨。
句型26.
主句＋due to / because of / owning to / + the fact that +从句。如：
He did not come to school because of the fact that he was ill.由于他有病了，所以没有来上学
。
六、时间状语从句
句型27.
When / While / As +从句，＋主句.如：
When I was in the country, I used to carry some water for you.当我在农村时，我常常给你打水
。
句型28.
主句＋after / before +从句. 如：
They hadn't been married four months before they were devoiced.他们结婚不到四个月就离婚了。
We went home after we had finished the work.我们做完此工作就回家了。
句型29.
主语＋肯定谓语＋until＋从句.请比较：主语＋否定谓语＋until+从句.如：
I worked until he came back.我一直工作到他回来。
I didn't worked until he came back.他回来我才开始工作。
句型30.
As soon as / Immediately / Directly / Instantly / The moment / The instant / The minute +从
句，＋主句. 如：
My father went out immediately I got home.我一到家，我父亲就出去了。
句型31.
No sooner +had + 主语＋done…than +主语＋did. 请比较： 主语＋had + no sooner +done…than +
主语＋did. 如：
No sooner had I got to Beijing than I called you.我一到北京就给你打电话了。请比较：I had no
sooner got to Beijing than I called you.
句型32.
Hardly/Scarcely/ Rarely +had +主语＋done…when / before + 主语＋did.请比较：主语＋had
+hardly/Scarcely/ Rarely + done…when / before +主语＋did.
Hardly had she had supper when she went out. 她一吃完晚饭就出去了。请
比较： She had hardly had supper when she went out.
句型33.
By the time+从句，＋主句.（注意时态的变化。）如：
By the time you came back, I had finished this book.到你回来时，我已经写完了这本书。
By the time you come back, I will have finished this book.到你回来时，我将写完这本书了。
句型34.
each / every time +从句，＋主句. (这时相当于whenever 或no matter when引导的从句。从句也可放
在主句之后。)如：
Each time he comes to Harbin, he always drops in on me.每当他来哈尔滨，总是顺便来看看我。
七、地点状语从句
句型35.
Where +从句，＋主句. 如：
Where there is no rain, farming is difficult or impossible.哪里没有雨水，种庄稼是很难的或者
是不可能的。
句型36、Anywhere / Wherever+从句，＋主句. 如：
Anywhere I go, my wife goes too.无论我去哪儿，我的妻子也去哪儿。请比较：
I will go wherever you suggest.你建议我去哪儿，我就去哪儿。
八、目的状语从句
句型37.
主句＋in order that / so that +从句.如：
I got up early in order that I could catch the first bus.我起得很早，以便能赶上早班车。
句型38.
主句＋for +sb. +to do.（注意动词不定式复合结构在这儿作目的状语。）如：
He came here for me to work out this problem.他来这儿叫我帮他解出这道难题。
九、结果状语从句
句型39.
主句＋so that+从句. 如：
It was very cold, so that the river froze.天气很泠，因此河水结冰了。
句型40.
So+形容词/ 副词＋特定动词(助动词或系动词)＋主语＋…＋that+从句.
So interesting is this book that I would like to read it again.这本书那么有趣，我想再读一遍。
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