Should与Oughtto的讲解和练习

1、Should 与 Ought toi.复习meat.Mr. White about the book1. Some people can live without2. May I use the phone please,3. Could you tell me something4. You must not smoke here.5. What flavorwouldyou like,chocolate or strawberry6. We should putrubbishinthe bin.7. She shouldn ' tdiscussit.8. Should wedisc

2、ussit now /Ought we to discuss itnow- Yes, weshould/ought to.- No, we shouldn ' t/oughtnot to.9. The students ought not to sleep in the class.10. Tom ought to hand inhis homework on time.II.二者区别:ShouldOught to意思表示主观看法,有“劝告、建议” 的意思，即“按我的想法该如何” 强调主观看法，语气比较委婉.一些建议，劝说时，译作“应当”比should 语气强，更多反映之 观情况,“有

3、义务”或“必要” fT 某事，有时带有责备或督促的意味， 译为“应当，应该”.否定表示某动作不一定要做表示做某事f是错误的虚拟语态VX时态ShouldOught to白立旬sb. should do sth.sb. ought to do sth.否定句sb. should not do sth.sb. ought not to do sth.一般疑问句Should sb. do sth.Ought sb. to do sth.简略回答Yes, sb. should do sth.No, sb. should not / shouldn ' t do sth.Yes, sb. ough

4、t to do sth.No, sb. ought not /oughtn ' t to do sth.should和ought to在用法上要注意以下 3点:1 .没有人称和数的变化。2 .后面接动词原形。3 .可用来构成否定句、疑问句及简明答语。ought to 是唯一一个可加 to的情态动词！ought to具体用法：1 .（表示义务、责任等） 应当， 应 该You ought to work harder than t hat.2 .（表示劝告、建议等）应该，You don't look well. You ought t o go to see the doctor.

5、3 .（表示猜测、期望）总应该，理应Itoughttobea fineday tomorrow morning.4 .“oughtto +have +过去分词”表示过去应做某事而实际未做You ought to have told me that（but you didn't）.这时ought to和should可以互换使用。Should具体用法：1 .表义务意为“应该”You should do what your parents tell you.He shouldn ' t stay up so late.2 .表温和的建议或指正This nameis wrong; it

6、 should be spelled Symthe, not Smith.3 .表期待.意为“可能”That should be easy.She should be here in a minute.4 .可用于完成时，完成时表示过去应该做而 未做的事情At the age of thirty-five I should have understood.5 .用于第一人称疑问句询问对方意愿，但与 其较委婉温和Should I open the window6 .表惊讶等感情I ' m surprised that he should say so.How should I know7

7、 .表委婉语气，常与say, think等动词连I should say he is over thirty.I should think it is a good film.III. 练习 单项选择1. We help the people in need.A. canB. ought to C. should D. could2. One cross the street against the red light.A. ought not B. ought to not C. shouldn t toD.oughtn t to3. I missed the train. You me t

8、hat the timetable had changed.A. should to tellB. should have told C. ought have to tell D. ought have told4. We throw the rubbishinto the bin.A. shouldB. ought toC. may D.would5. Parents raisetheir childrenuntil they are 18.A. should B. ought to C. may D. would6. They discussit now.A. ought to not

9、B. not ought to C.dontought to D.ought not to7. he his parents about this problemA. Should, listensB. Ought, listens to C. Should, listen toD. Ought, listen to8. He here on time.A. should came B. should come C. should comes D. should c oming9. You buy the ticket before getting on the train.A. ought

10、B. should C. mustn t D.can t10.To protect our eyes, we keep enough distance from books whenwe read them.A. shouldn t B.oughtnot C.ought not toD. ought to11. Tom saysorryto Tracy becausehe broke herbike.A. should B.should C. mustn tD. can t12. He saidsuch athing beallowed happen.A. oughtn tto B.might

11、 notC. maynot D. neednt13. - Ought we to clean the classroom now - Yes, we .A. oughtB.should C. mustD. can句型转换a） We should take good care of the young tree. （ 改为一般疑问句 ） we good care of the young treesb） You ought to turn off the lights when you leavethe room. （ 改为一般疑问句 ） I off the lightswhen I leave

12、the roomc） You ought to put your bike under the tree. （ 改为否定句 ）You your bike under the tree.d） The child should drink some orange juice. （ 改为否定句 ） The child orange juice.e） They should arrive at the station before 7 o clock .（ 就 划 线 部 分 提问） at the station根据要求改写句子a） You should do your homework carefully. （用 ought to 改为同义句 ）b） Tom shouldlook after his littlesister.（ 改为一般疑问句 ）c） They oughtto help theirparentsdo thehousework.（ 改为 一 般 疑 问句）d）