用法联想

　　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)

　　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)

　　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”

　　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.There was 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:

　　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.

　　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.Not all / 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should do)

　　41.I like / hate / appreciate it that / when等从句 (it表

　　示后面从句的这种情况)

　　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

　　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

　　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：

　　-----Do you agree with his suggestion?

　　-------I can’t agree more.

　　48. What if……..要是…….怎么办?

　　What if he doesn’t come tomorrow?

　　49. more……..than与其…….不如……..

　　He is more 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)

　　It is two years since he drank.他不喝酒已两年了.