2021高考英語(yǔ)必考知識(shí)點(diǎn)(4)

1、2021 高考英語(yǔ)必考知識(shí)點(diǎn) 4句型 31從句lf + were/did動(dòng)詞的過去式,主句主語(yǔ)+would/might/should/could + do 表示對(duì)現(xiàn)在情況的假設(shè) 例句 lf l were you, l would not be so proud.如果我是你，我不會(huì)如此自負(fù)。lf l were in your position, l would think better of it.如果我處在你的位置，我會(huì)好好考慮它。句型 32從句lf + had done, 主句主語(yǔ) + would/might/should/could +have d o n e 表示對(duì)過去或已經(jīng)發(fā)生事情的虛

2、擬假設(shè) 例句 What a pity it is that you didnt attend the concert yesterday! lf you had attended the concert, you would have seen the famous singer.真遺憾昨天你沒有去聽音樂會(huì)。如果你去了，就能見到那位歌手。Anyone in his position would have done the same.lf anyone had been in his position, he would have done the same.任何處在他位置的人都會(huì)這樣做的。句型

3、 33從句If + were/did動(dòng)詞過去式were to do/should do ,主句主語(yǔ) +would/might/should/could + do 表示對(duì)將來的假設(shè) 例句 If he should refuse = If he were to refuse=If he refused, it didnt matter at all. 萬(wàn)一他拒絕了，那也沒關(guān)系。If you shouldnt pass the college entrance examination, what would you do?萬(wàn)一高考不中，你該怎么辦？句型 34 虛擬語(yǔ)氣條件句的倒裝 在虛擬條件句中，如

4、果出現(xiàn)有 were, had, should ，可以省去 if, 把這些詞 放在句子前面，構(gòu)成虛擬倒裝句。 例句 Should he act like that again, he would be fined.如果他還這樣做，就要受罰。Had the doctor comein time last night (=If the doctor had come in time last time), the boy would have been saved. 昨天晚上要是醫(yī)生及時(shí)到達(dá)，小 孩就會(huì)得救。句型 35if only引起的感慨句，相當(dāng)于How I wish +賓語(yǔ)從句，意思是但愿;要

5、是就好了 例句 If only he could come! 他要是能來就好了 !要是沒有這么多的作我當(dāng)時(shí)沒有那么粗心就 ) 要不是因?yàn)橛蠭f only we students didnt have so much homework! 業(yè)該多好 !If only I hadnt been so careless in the exam! 好了 !句型 36if it were not for (= were it not for ) if it hadnt been for (= had it not been for如果不是注意這種結(jié)構(gòu)中不能用否認(rèn)結(jié)構(gòu)的縮寫形式，即不能用 werent it

6、 for ) 例句 If it hadnt been for (= Had it not been for) the determined captain, all the passengers on board wouldnt have been saved.要不是船長(zhǎng)一直堅(jiān)強(qiáng)，船上的旅客就不會(huì)得救。If it were not for your rich parents, you couldnt live so easy a life.要不是你父母有錢，你的生活不會(huì)如此安逸If it were not for the expense, I would go abroad now.如果不是因

7、為經(jīng)費(fèi)問題，我現(xiàn)在就出國(guó)了。句型 37but for +名詞和but that +從句，意思是倘假設(shè)不是；要不是，接虛擬 語(yǔ)氣 例句 But for air and water, nothing could live. (= If there were no air or water, nothing could live.) 如果沒有空氣和水，什么東西都難以生存。But for the storm, we should have arrived earlier.= If it hadnt been for the storm, we should have arrived earlier.

8、如 果不是暴風(fēng)雨，我們?cè)缇偷搅?。But for you, we couldnt have carried out the plan.要不是你的話，我們無法實(shí)施那項(xiàng)方案。She could not have believed it but that she saw it.假設(shè)非親眼所見，她是不會(huì)相信的。句型 38在動(dòng)詞 insist(1堅(jiān)持做某事),order, command(2命令),advise, suggest,propose(3 建議做某事 )， demand, require, request, ask(4 要求)等表示建議、 命令、要求的名詞性從句中謂語(yǔ)動(dòng)詞要用虛擬語(yǔ)氣。 根本句型

9、： 主語(yǔ)+ (should) + 動(dòng)詞原形。另外像 decide, desire, intend, recommenc等也要接(should)+ 動(dòng)詞 原形結(jié)構(gòu)。 注意 1advice, suggestion, order, demand, proposal, request, desire, command, decision, requirement 等名詞引導(dǎo)的同位語(yǔ)從句或表語(yǔ)從句，謂語(yǔ)動(dòng)詞用 (should) + 動(dòng)詞原形。 注意 2Its suggested/ advised/ demanded/ordered/requested/proposed/required/desired

10、等結(jié)構(gòu)后的主語(yǔ)從 句中，謂語(yǔ)動(dòng)詞用 (should) + 動(dòng)詞原形。注意3suggest意思是說明，暗示；說明時(shí);insist 意思是堅(jiān)持觀點(diǎn)，堅(jiān)持看法 時(shí)，句子不能用虛擬語(yǔ)氣。 例句 He insisted that he was innocent.=He insisted on his innocence. 他 堅(jiān)持說自己是無辜的。He insisted that he had never done wrong. 他堅(jiān)持說沒有做錯(cuò)事情。Are you suggesting that Im not suited for the job? 你是在暗示說我 不適合做那項(xiàng)工作 ?The look

11、on his face suggested that the teacher was quite satisfied with the result. 臉上的表情說明老師對(duì)結(jié)果感到滿意。句型 39It is necessary/important/natural/impossible/essential( 根本的 ) 等結(jié) 構(gòu)后的主語(yǔ)從句中要用虛擬語(yǔ)氣，即主語(yǔ) +(should)+ 動(dòng)詞原形 例句 Its necessary that Tom take the exam first. Tom 有必要先參加考試。With the society developing very fast, its quite necessary/important that we (should) have a good knowledge of English and computer. 隨著社 會(huì)的快速開展，我們有必要精通英語(yǔ)和電腦。句型 40Its stra nge/surpris ing/a pity/a shame/a surprise (that)shoulddoshould表示竟然 例句 Its a pity that she should mi