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1、书面表达中常用的重点句型一、以形式主语it引导的句型。 1. It happened（chanced） that +clause. = sb. happened /chanced sth. = sb. did sth. by chance. e.g. It happened that he was out when I got there. 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. 2.
2、 It seems that sb. do/ be doing/ have done/ had done= Sb. seems to do/ be doing/ have done/ had done （还有动词appear可这样使用） e.g. It seemed that he had been to Beijing before. He seemed to have been Beijing before. 3. It is / was被强调的部分that(who)+剩余的部分.e.g. It wasnt until he came back that I went to bed. (一
3、定要注意被强调句型谓语动词否定的转移，及形式)。 It was because he was ill that he didnt come to school today.（只能用because而不能用for, as 或since） It is I who am a student.（句中am不能用are来代替。） 4、It is high time (time/ about time) (that) 主语should do / did+其它。（注意从句中的谓语动词用的是虚拟语气） e.g. It is high time that we should go / went home.我们该回家
4、了。 5、It is / was said ( reported)that+从句. e.g. It was said that he had read this novel.He was said to have read this novel. 6、It is impossible / necessary/ strangethat clause.(从句中的谓语用shoulddo / should have done，其形式是虚拟语气。) e.g. It is strange that he should have failed in this exam.真奇怪，他这次考试没有及格。 7、It
5、 is + a pity/ a shamethat 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。) e.g. He didnt come back until the film ended. It was a pity that he should have missed this film.8、It is suggested / ordered/ commanded /that +clause.(从句的谓语动词用should do, 但should可以省略。)e.g. It is suggested that th
6、e meeting should be put off.有人建议推迟会议。 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。） e.g. 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。) 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。） e.g. It was 1999 when he came back from the Unite
7、d States. 请比较：It was in 1999 that he came back from the United States. 11、It is well-known that从句。e.g. It is well-known that she is a learned woman. 众所周知，她是个知识渊博的妇女。 12、It is +段时间since+主语did. It was +段时间since+主语had done. e.g. It is five years since he left here.他已经离开这儿五年了。 It was five years since he
8、 left here.（同上） 13、It +谓语段时间before+主语谓语.（ before引导的是时间状语从句。）It wasnt long before the people in that country rose up.没有多久那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。 14、It is +形容词for+ sb.+ to do. It is impossible for me to finish this work before tomorrow.15、It is +（心理品质方面的）形容
9、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。)It is kind of you to help me.You are kind to help me. 二、定语从句： 16、由as引导的非限定性的定语从句。As we have known, he is a most good student. （定语从句）It is well-known that he is a most good student. （主语从句）17、由which引导的非限定性的定语从句。He is a
10、professor, which I have been looking forward to becoming. （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）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。） This is the house where I used to come.This is the house which / that I used to come to. (比较)This is the day when I joined the Party.This is the day which / th
11、at I joined the Party on.（比较）说明：关于that与which之间的区别，请看语法中的定语从句。 三、让步状语从句 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用一般现在时态。No matter what you do, you must do it well. -Whatever you do, you must do it well. No matter where you go, please let me know. -Wherever you go, plea
12、se let me know.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 20、When / So long as / As long as / Once +从句，主句。（从句也可以放在主句之后。） As long as you give me some money, I will let you go.只要你给我一些钱，我就让你走。 Once you have begun to le
13、arn English, you should learn it well. 21、主句on condition that+从句。 I will go with you on condition that you give me some money.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。)I will go there tomorrow unless it rains. 23、祈使句，and/ and then+主句。（注意：祈使句也可用一个名词短语。）Use your head, and you will find a good
14、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。 24、If +necessary / impossible/ important等，主句。 If necessary, I will do it. 五、原因状语从句 25、主句in case+从句。（in case表示以免） I will take my raincoat in case it rains. 26、主句due to / because of / owning to / + the fact that +从句。He did not come
15、to school because of the fact that he was ill.六、时间状语从句 27、When / While / As +从句，主句。（关于它们之间的区别请看语法。） When I was in the country, I used to carry some water for you. 28、主句after / before +从句.They hadnt 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。 29、主语肯定谓语until从句（或时间）.主语否定谓语until+从句。 I worked until he came back. I didnt worked until he came back. 30、As soon as / Immediately / Directly / Instantly / The moment / The in
