Should與Oughtto的講解和練習(xí)

1、1Should與Ought toi.復(fù)習(xí)1.Some people can live without meat.2.May I use the pho ne please, Mr. White?3.Could you tell me someth ing about the book?4.You must not smoke here.5.What flavor would you like, chocolate or strawberry?6.We should put rubbish in the bin.7.Sheshouldn discuss it.8.Should we discus

2、s it now? / Ought we to discuss it now?-Yes, we should/ ought to. - No, weshouldnought not to.9.The stude nts ought not to sleep in the class.10.Tom ought to hand in his homework on time.11. 二者區(qū)別：ShouldOught to意思表示主觀看法，有 勸告、建議”的意 思，即按我的想法該如何”強調(diào)主觀 看法，語氣比較委婉.一些建議，勸 說時，譯作應(yīng)當(dāng)”比should語氣強，更多反映客觀情 況，有義務(wù)”或必要

3、”做某事，有 時帶有責(zé)備或督促的意味，譯為 應(yīng)當(dāng)，應(yīng)該”.否定表示某動作不一定要做表示做某事 疋疋錯誤的虛擬語態(tài)VX時態(tài)ShouldOught to冃疋句sb. should do sth.sb. ought to do sth.2否定句sb. should not do sth.sb. ought not to do sth.一般疑問句Should sb. do sth.?Ought sb. to do sth.?簡略回答Yes, sb. should do sth.No, sb. should not / shouldntdo sth.Yes, sb. ought to do sth.No

4、, sb. ought not /oughtntto do sth.3should 和 ought to 在用法上要注意以下 3 點:1沒有人稱和數(shù)的變化。2.后面接動詞原形。3.可用來構(gòu)成否定句、疑問句及簡明答語。ought to 是唯一一個可加 to 的情態(tài)動詞!ought to 具體用法：1. （表示義務(wù)、責(zé)任等）應(yīng)當(dāng),應(yīng)該You ought to work harder tha n that.2. （表示勸告、建議等）應(yīng)該，You dont look well. You ought to go to see thedoctor.3. （表示猜測、期望）總應(yīng)該，理應(yīng)It ought to

5、 be a fine day tomorrow morning.4.“ought to + have +過去分詞”表示過去應(yīng)做 某事而實際未做You ought to have told me that（but you did nt） .這時ought to和should可以互換使用。Should 具體用法：1.表義務(wù)意為”應(yīng)該”You should do what your pare nts tell you.He should nstay up so late.2.表溫和的建議或指正This name is wrong; it should be spelledSymthe, not Sm

6、ith.3.表期待.意為”可能”That should be easy.She should be here in a minu te.4.可用于完成時，完成時表示過去應(yīng)該做而未 做的事情At the age of thirty-five I should have un derstood.5.用于第一人稱疑問句詢問對方意愿，但與 其較委婉溫和Should I ope n the win dow?6.表驚訝等感情Im surprised that he should say so.How should I know?7.表委婉語氣,常與say, think等動詞連用I should say h

7、e is over thirty.I should think it is a good film.4III. 練習(xí)單項選擇1. We_help the people in need.A. can B. ought to C. should D. could2. One_cross the street against the red light.A. ought not B. ought to not C.shouldntotD. oughtntot3. I missed the train. You_me that the timetable had changed.A. should t

8、o tell B. should have told C. ought have to tell D. ought have told4. We_throw the rubbish into the bin.A. should B. ought to C. may D. would5. Parents_raise their children until they are 18.A. should B. ought to C. may D. would6. They_discuss it now.A. ought to not B. not ought toC. donotught toD.

9、ought not to7._he_his parents about this problem?A. Should, listens B. Ought, listens to C. Should, listen to D. Ought, listen to8. He_here on time.A. should came B. should come C. should comes D. should coming9. You_buy the ticket before getting on the train.A. ought B. shouldC. mustntD. cant10. To

10、 protect our eyes, we_keep enough distance from books when we read them.A. shouldntB. ought not C. ought not to D. ought to11. Tom_say sorry to Tracy because he broke her bike.A. shouldB. should C. mustntD. cant12. He said such a thing_be allowed happen.A. oughtntotB. might not C. may notD. neednt51

11、3. -Ought we to clea n the classroom now? - Yes, we_.A. ought B. should C. must D. can句型轉(zhuǎn)換a） We should take good care of the young tree改為一般疑問句）_we_good care of the young trees?b） You ought to turn off the lights when you leave the room.改（為一般疑問句）_I_ _off the lights when I leave the room?c）You ought t

12、o put your bike under the tree.改為否定句）You_ _ _ _your bike under the tree.d） The child should drink some orange juice.改（為否定句）The child_ _ _o ra n g e juice.e） They should arrive at the station before 7）clock（就劃線部分提問）_ _ _ _at the station?根據(jù)要求改寫句子a） You should do your homework carefully.用ought to改為同義句）b） Tom should look after his little sister. （改為一般疑問句）c）They ought to help their parents do the housework.改為