高中英语习惯用法汇总(2)
17． It is / was +介词短语/ 从句/ 名词/代词等+that………
How / When / Where / Why is / was it that………..?
注意：此句型为强调句，当被强调的为表示人的词时，还可用who连接；强调主语时，从句后的谓语动词应与前面的主语保持一致；注意与定语从句的区别）
18 .How is it that……..（这几个句型都表示“怎么会…….?” “怎么发生的？”）
How come+从句？
How does / did sth. come about? ( How did it come about that…….?)
如:How come you are late again?
19. There seems / appears / happens to be / must be / can’t be / is (are, was, were) said to be / is (are, was, were) thought to be…….
表示 “.似乎有/碰巧有/一定有/不可能有/ 据说有/认为有……..”
介词（如of ）there being
want / wish / expect there to be要/希望/期待有……..
adj. / adv. enough for there to be…….足够…….会有…….
注意：there being / there to be为there be的非谓语形式；It is said / thought that there is / are……=There is / was / are / were said (thought) to be……. 如：
I have never dream of there being such a good chance for me.
It won’t be cold enough for there to be a frost tonight.
20. 疑问词+插入语+陈述语序？
Who do you think he’ll have attend the meeting?
21. But for + n. / pron., sb. / sth. would (not) have done…..要不是……., 某人早就……(表示虚拟语气)=If it had not been for…..,……./ If there had not been ……., ……..
22. It won(’t) be long before +从句（从句中用一般现在时）不久/很久就要…….
It was (not) long before+从句（从句中用一般过去时）不久/很久才……..
23. Those who………….(从句及主句中谓语动词用复数形式).
Anyone who…………= Whoever………..(从句及主句中谓语动词用单数形式)
24…….主句（一般现在时或过去时）…...when从句….(might / should do 或might / should have done) 表示”对比”,意思为 “本该……(可)而却”,主句中为陈述语气,从句里为虚拟语气,如:
Why are you here when you should be in school?你本该上学的怎么在这儿?
He stopped trying when he might have succeeded .本该已成功了他却停止努力了.
25. There is ./ Sb. have no doubt that………(同位语从句,that不可省略)
There is / Sb. have some doubt whether……..(同位语从句不可用if)
Sb. doubt if / whether…….
Sb. don’t doubt that………
26 . immediately / directly / instantly / the moment +从句
on / upon + n. / doing
No sooner had sb. done than …….(过去时)
