1.It’s the first time that……….(从句中用现在完成时)
It was for the first time that………(强调句，对状语for the first time进行强调)
It’s (high) time that……..(从句中用过去时或should do)
2.It’s the same with sb. / So it is with sb.
表示某人也如此(用于前句中既有肯定又有否定或两个不同类的谓语动词)
3. …be about to do / be doing……when…….正要做/正在做……就在那时…….
4.A is twice / three times as +原级+as B A是B的两倍/三倍
A is twice / three times the n. of B. A的…是B的两倍/三倍
A is twice / three times +比较级+than B A比B多两倍/三倍
5.It’s a waste of time / money doing / to do…做……浪费时间/金钱
It’s no use / good doing……… 做……是没有用的
It’s possible / probable / (un) likely that………. 很可能……
It makes great / no sense to do……做某事很有/没意义
6.There’s no use / good doing……. 做……没有用
There’s no sense / point (in) doing…… 做……没有意义
There is no need for sth. / to do……. 没有过必要做……
There is (no) possibility that…………(同位语从句)很可能/没可能……
7.The+比较级……..,the+比较级………越…….., 越…….
注意：前半句为从句，用一般现在时代替将来时;
8.It seems / appears ( to sb. ) that sb…….在某人看来某人……
= Sb.seems / appears to be / to do / to be doing / to have done……..
It seems / looks as if……….好象/似乎……..
9.It (so)happened that sb. ……..某人碰巧……..
= Sb. happened to be / to do / to be doing /to have done…..
10.It is said / thought / believed / hoped / supposed …….that sb………
=Sb. is said to be / to do / to be doing / to have done……….
(注意：这种句型里如带动词hope则不能变成简单句，因为无hopesb. to do结构)
11.It is/ has been +一段时间+since从句(从句中如为延续性动词,则实际表示的意思相反)
Eg:It is two years since he drank.他不喝酒已两年了.
12.…….such…….that…….如此…….以致于(引导结果状语从句)
…….such……..as……像……..的这种……(as为关系代词，引导定语从句，在从句里充当主、宾、表)
13. Do you mind if I do sth.? / Would you mind if I did sth.? 你介意我做……吗?
14.The chance is that……../ (The) Chances are that……….很可能…….
15.Check/ Make sure / See to it / See that……..(从句中常用一般现在时) 确信/务必……..
16.depend on it that……..取决于
see to it that…….负责/设法做到…….
注意：除了except / but / in等介词可以直接接that从句，其它介词后必须用it做形式宾语;
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：
Eg: 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?
Eg: Whodo 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
Eg: 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) 毫无疑问……
There is / Sb. have some doubt whether……..(同位语从句不可用if)不确定…是否…
Sb. doubt if / whether……. 某人怀疑是否……
Sb. don’t doubt that……… 某人不怀疑……
26.immediately / directly / instantly / the moment +从句
on / upon + n. / doing
No sooner had sb. done than …….(过去时)
Hardly had sb. done when……..(过去时)
注意：这几个结构都表示“一…….就”;
27.every time / each time / the last time / the first time / next time +从句(名词性短语引导一个时间状语句)
anywhere / everywhere +从句(相当于wherever引导的地点状语从句)
Eg: You can go anywhere you like.
Next time you come, please bring your son along.
28.If only / I wish +从句(用过去类时态) 表示虚拟语气, “要是…….就好了” “但愿……就好了!”
29.Considering+ n. 或 pron. 或 that从句 / Seeing that……….考虑到/鉴于…….
Given + n. / pron作状语,表示 “在有……的情况下” “如果有” “假定”,有时也表示”考虑到”
Eg:Seeing (that) he refused to help us, there is no reason why we should help him now.
Given good health, I hope to finish the work this year.
Given their inexperience / that they are inexperienced, they’ve done a good job.
30.Therewas a time when…….曾经有那么一度………
31.other than与no, not, none等否定词连用,表示肯定意思,如:
Eg: It was none other than Mr. Smith.这正是Smith先生.
32.Not until…….did / do/ does / will sb. do……
It was / is not until ……that sb………
33.It’s(un) like sb. to do / to have done……做某事很像某人/ 做某事可不像某人
34.It remains to be seen Wh--words ……..是否…….还有待于看.(不用that, if作连接词)
35.It only remains for sb. to do……剩下的只是要某人做某事.
Eg: We’ve got everything ready. It only remains for you to come to dinner.
36.One moment……., and now………刚才一会儿还在做……而现在却……..
37.Notall / both / everyone………表示部分否定
38.Such is / are……..这(些)就是…….(谓语动词单复数由后面名词决定)
39.I’d rather (not) do / have done……我宁愿…..
I’d rather +从句(从句中用过去时或过去完成时)
40.It’s important / necessary / strange / surprising….+that……(用陈述语气或shoulddo)
41.I like / hate / appreciate it that / when等从句 (it表示后面从句的这种情况)
Eg: I appreciate it if you will give me a hand.
42.By the time +从句(一般现在时/过去时)，主句(将来完成时/过去完成时)
43.……….,as is often the case with sb. / as is usual with sb.(as引导非限制性定语从句)
44.in case / lest / for fear that…….(从句中用陈述语气或should do)
45.While置于句首可表示As long as 或 Although
Eg: While there is life there is hope.
While I admit his good points, I can see his bad ones.
46.can not ( never) ……too +adj. (adv. ) / adj. (adv.) + enough“越……越好”“非常”
too + adj. ( anxious / eager / willing / ready / glad等)+to do….表示肯定意思
Eg: I can’t thank you enough.我非常感激你.
He was too glad to see his father.=He was very glad to see his father.
47.not /neve等表示否定的词与比较级连用表示最高级，如：
Eg:-----Do you agree with his suggestion? -------I can’t agree more.
48.What if……..要是…….怎么办?
Eg:What if he doesn’t come tomorrow?
49.more……than与其…….不如……..
Eg:He is more nervous than frightened.
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