21. Butfor + 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. Itwon(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. Thosewho.(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: Whyare you here when you should be in school?你本该上学的怎么在这儿?
Hestopped trying when he might have succeeded .本该已成功了他却停止努力了.
25. Thereis ./ 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. doubtif / whether. 某人怀疑是否
Sb. dont 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. everytime / 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: Youcan go anywhere you like.
Next timeyou come, please bring your son along.
28.Ifonly / 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 himnow.
Given good health, I hope to finish the work this year.
Given their inexperience / that they are inexperienced, theyvedone a good job.
30.Therewas a time when.曾经有那么一度.
31.otherthan与no, not, none等否定词连用,表示肯定意思,如:
Eg: Itwas none other than Mr. Smith.这正是Smith先生.
32. Notuntil.did / do/ does / will sb. do
It was / is not until that sb
33.Its(un) like sb. to do / to have done做某事很像某人/ 做某事可不像某人
34.Itremains to be seen Wh--words ..是否.还有待于看.(不用that, if作连接词)
35.Itonly remains for sb. to do剩下的只是要某人做某事.
Eg: Wevegot everything ready. It only remains for you to come to dinner.
36.Onemoment., 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. Suchis / are..这(些)就是.(谓语动词单复数由后面名词决定)
39.Idrather (not) do / have done我宁愿..
Idrather +从句(从句中用过去时或过去完成时)
40. Itsimportant / necessary / strange / surprising.+that(用陈述语气或shoulddo)
41. Ilike / hate / appreciate it that / when等从句 (it表示后面从句的这种情况)
Eg: Iappreciate it if you will give me a hand.
42. Bythe 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shoulddo)
45.While置于句首可表示Aslong as 或 Although
Eg: Whilethere is life there is hope.
While I admit his good points, I can see his bad ones.
46. cannot ( never) too +adj. (adv. ) / adj. (adv.) + enough 越越好非常
too + adj. ( anxious / eager / willing / ready / glad等)+todo.表示肯定意思
Eg: I cantthank you enough.我非常感激你.
He wastoo 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:-----Doyou agree with his suggestion?
-------I cant agree more.
48. Whatif..要是.怎么办?
Eg:Whatif he doesnt come tomorrow?
49. more..than与其.不如..
Eg:He ismore nervous than frightened.
50. 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 istwo years since he drank.他不喝酒已两年了.
21. Butfor + 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. Itwon(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. Thosewho.(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: Whyare you here when you should be in school?你本该上学的怎么在这儿?
Hestopped trying when he might have succeeded .本该已成功了他却停止努力了.
25. Thereis ./ 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. doubtif / whether. 某人怀疑是否
Sb. dont 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. everytime / 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: Youcan go anywhere you like.
Next timeyou come, please bring your son along.
28.Ifonly / 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 himnow.
Given good health, I hope to finish the work this year.
Given their inexperience / that they are inexperienced, theyvedone a good job.
30.Therewas a time when.曾经有那么一度.
31.otherthan与no, not, none等否定词连用,表示肯定意思,如:
Eg: Itwas none other than Mr. Smith.这正是Smith先生.
32. Notuntil.did / do/ does / will sb. do
It was / is not until that sb
33.Its(un) like sb. to do / to have done做某事很像某人/ 做某事可不像某人
34.Itremains to be seen Wh--words ..是否.还有待于看.(不用that, if作连接词)
35.Itonly remains for sb. to do剩下的只是要某人做某事.
上一篇： 高考英语形容词和副词六大考点
下一篇： 高中英语语法：名词作定语的复数问题