高中英語語法精講(Unit13Healthyeating)大綱人教版第一冊(cè)Word版

1、語法精講Modal Verbs(1)情態(tài)動(dòng)詞had better,should,ought to1.had better1)had better無人稱和數(shù)的變化，后接不帶to的動(dòng)詞不定式，表“義務(wù)”或“建議”，語氣比should 或ought to更委婉。常譯作“最好”“還是好”等，可用于第一、二、三人稱。否定式為had better no.,疑問式為Had I/you better.?否定疑問式為Had+sb.+better not.?或Hadnt+sb.+better.?We/You/He had better write it down.我們/你/他最好把它記下來。You had bet

2、ter not ask her about it.你最好不要問她那件事。Had you better go at once?Yes,we had better.No,wed better not.2)had better的祈使句形式為Better do sth.。Better get up at once.你最好立刻起床。3）had better have done sth.用于事后的建議，含輕微責(zé)備的口吻，意為“當(dāng)時(shí)最好做了某事”，其否定式had better not have done表達(dá)相反的含義。You had better have started earlier.你當(dāng)時(shí)最好早點(diǎn)出發(fā)

3、。You had better not have scolded her.你當(dāng)時(shí)沒責(zé)備她就好了。 2.should1）表示出于職責(zé)、義務(wù)該做某事You should write to your parents once a month.你應(yīng)該每月給你父母親寫一封信。2）表示對(duì)某種情況的估計(jì)，極有可能發(fā)生This book should be published in two months.這本書兩個(gè)月后就會(huì)出版的。3）表示驚訝、失望等情緒It seems so unfair that this should happen to me.這件事竟然發(fā)生在我身上，似乎太不公平了。4）should h

4、ave done表示對(duì)過去的虛擬“本來應(yīng)該做而沒做”。You should have worked harder in senior middle school.在高中的時(shí)候你本來應(yīng)該更努力地學(xué)習(xí)。3.ought to1）ought to無人稱和時(shí)態(tài)的變化，可表示義務(wù)、要求或勸告，常譯作“應(yīng)該”“應(yīng)當(dāng)”等，語氣比should稍重些，常表示客觀情況，否定式為ought not to(oughtnt to)，疑問式為Ought I/you to,.?We ought to study hard for the sake of our motherland.我們應(yīng)該為了我們的祖國而努力學(xué)習(xí)。Ough

5、tnt you to give us a chance to try?你難道不應(yīng)該給我們一個(gè)嘗試的機(jī)會(huì)嗎？2）表示極有可能發(fā)生某事Make your enemy your friend.化敵為友。If we set off right now,we ought to be able to get there on time.如果我們馬上出發(fā)，我們應(yīng)當(dāng)能夠按時(shí)到達(dá)那里。【考例1】（2006四川高考，34）Do you mind my smoking here?_.A.No,thanksB.No.Good ideaC.Yes,pleaseD.Yes.Better not解析：A、B、C三項(xiàng)答語都自

6、相矛盾，題意為：“你介意我在這兒吸煙嗎？”“是的（我介意），你最好別吸?！贝鸢福篋【考例2】_ I go home now,sir?No,you _.You should finish the composition first.A.Might;wouldntB.May;had better notC.Must;mustnt D.Need;mustnt解析：may的一般疑問句形式，根據(jù)句子的意義，否定回答可使用had better not。答案：B【考例3】(2006江蘇高考，21)I think Ill give Bob a ring.You _.You havent been in tou

7、ch with him for ages.A.willB.mayC.have to D.should解析：should意為“應(yīng)該”，多表示某事宜做，應(yīng)當(dāng)做或必須做，強(qiáng)調(diào)主觀方面。根據(jù)所提供的情景可判斷出由于多年沒有了解，應(yīng)該給Bob打電話。will意為“將”；may意為“可以”;have to意為“不得不”，表示因客觀原因不得不做某事。答案：D【考例4】(2006南京一模)Well,I could never imagine an honest boy like John _ cheat in the exam!A.wouldB.shouldC.couldD.might解析：考查情態(tài)動(dòng)詞的用法。should與第三人稱連用，表示吃驚、憤怒、失望等語氣。答案：B【考例5】(2006重慶一模)There is a lot of smoke coming out of the teaching-building there.Really?It _ be a fire,most probably.A.canB.ought toC.have toD.must解析：考查情