Should与Oughtto的讲解和练习

1、Should 与 Ought toI.复习1. Some people can live without meat.2. May I use the phone please, Mr. White?3. Could you tell me something 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. Sho

2、uld we discuss it now? / Ought we to discuss it now?-Yes, we should/ ought to. - No, weshouldn ' ou/ght not to.9. The students ought not to sleep in the class.10. Tom ought to hand in his 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

3、语气强，更多反映客观情 近，有义务”或必要”做某事，后 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 / shouldrnt do sth.Yes, s

4、b. ought to do sth.No, sb. ought not /oughtnt. 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 that.2 .（表示劝告、建议等）应该，You don't look well. You ought to go to see the doctor.3 .（

5、表示猜测、期望）总应该，理应It ought to be a fine day tomorrow morning.4 . “ought to + 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 name is wro

6、ng; it 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 window?6 .表惊讶等感情I'm surprised that he should say so.How should I

7、know?7 .表委婉语气，常与say, think等动词连用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. can B. ought to C. should D. could2. One cross the street against the red light.A. ought not B. ought to not C.shouldn t to D. oughtn t to3. I missed the train.

8、 You me that the timetable had changed.A. should to 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

9、.A. ought to notB. not ought to C. dont ought toD. 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

10、 the train.A. ought B. shouldC. mustn tD. can t10. To protect our eyes, we keep enough distance from books when we read them.A. shouldn t B. ought not C. ought not to D. ought to11. Tom say sorry to Tracy because he broke her bike.A. shouldB. should C. mustn t D. can t12. He said such a thing be all

11、owed happen.A. oughtn t to B. might not C. may not D. neednt13. - Ought we to clean the classroom now? - Yes, we.A. ought B. should C. must D. can句型转换a） We should take good care of the young tree以为般疑问句）we good care of the young trees?b） You ought to turn off the lights when you leave the room.改为般疑问句

12、） I off the lights when I leave the room?c） 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）' 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 should look after his little sister. （改为一般疑问句）c） They ought to help their parents do the housework.改为一般疑问