例：He left early in case he should miss the last train.
(2) for fear (that)
例：He handled the instrument with care for fear (that) it should be damaged. (3) so that
例：Let’s take the front seats so that we can see more clearly. (4) in order that
例：He got up very early so that/in order that he might/could catch the early bus.
(6) hardly ... when.... (no sooner ... than)句型用过去完成时
例：Hardly had I reached the school when the bell rang. 我一到学校，铃子就响了。
No sooner had we sat down at the table than the phone rang.
42、几种特殊的状语从句句型：
(1) everywhere 引导
例：Everywhere they went, they were kindly received / warmly welcomed. (2) anywhere 引导
例：We’ll go anywhere the Party directs us. (3) the way 引导
例：She is doing her work the way I like it done. (4) immediately/instantly引导
例：I didn’t wait a moment, but came immediately you called.
40、几个难掌握的主语从句和宾语从句
(1) You may take whatever(=anything/everything that)you like.
(2) You may take whichever(=any) seat you like. (3) Whoever(=Anyone who) cuts the trees down must be punished.
(4) You may give the note to whomever(=anyone whom) you meet at the office.
（5）You can write about whatever topic you prefer.
（6）She will give whoever needs any help a warm support.
41、使用现在完成时和过去完成时的常用句型： (1) since句型：主句用完成时
例：My aunt has worked in a clinic since 1949. (2) since when +完成时
例：Since when have you planted so many young trees?
(3) This/it is the first (third...) time sb have/has done sth
This/it was the first (third...) time sb had done sth
例：This is the first time I have been here. (4) by?（到??为止）到过去某个时候为止用过去完成时，到现在为止用现在完成时，到将来某个时候为止用将来完成时。
例：She will have finished the book by my next birthday.
(5) in the past time( two days/years...) +完成时
例：In the past 10 years, there have been great changes in our family life.
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43.关于众所周知的表达：
(1) As is known to everybody, the earth moves around the sun.
(2) It is known to everybody that the earth moves around the sun.
(3) What is known to everybody is that the earth moves around the sun.
44 、有关it的几个特殊句型 ：
(1) owe it to sb. that?把?归功于?
例：I owe it to you that I finished my work in time.
(2) take it for granted that ?想当然 例：I take it for granted that they will support this idea.
(3) keep it in mind that?
例：It must be kept in mind that there is no secret of success but hard work.
(4) It用在不能直接跟宾语从句的动词后面，尤其是表示好恶的动词后， enjoy, like, love, dislike, resent, hate, don't mind, be fond of, feel like, see to, appreciate, stand 宾语从句跟it之后
例.I would appreciate it if you call me back this evening.
(5). I can’t help it if he is always late. (6) when it comes to football, he is more excited.
(7) As someone puts it, practise makes perfect.