Should与Oughtto的讲解和练习

1、1Should与Ought toi.复习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，更多反映客观情 况，有义务”或必要

3、”做某事，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 疋疋错误的虚拟语态VX时态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.一般疑问句Should sb. do sth.?Ought sb. to do sth.?简略回答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 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 tha n that.2. （表示劝告、建议等）应该，You dont look well. You ought to go to see thedoctor.3. （表示猜测、期望）总应该，理应It ought to

5、 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 did nt） .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 pare nts tell you.He should nstay up so late.2.表温和的建议或指正This name is wrong; it should be spelledSymthe, not Sm

6、ith.3.表期待.意为”可能”That should be easy.She should be here in a minu te.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 un derstood.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 ope n the win dow?6.表惊讶等感情Im surprised that he should say so.How should I know?7.表委婉语气,常与say, think等动词连用I should say h

7、e is over thirty.I should think it is a good film.4III. 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.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 trees?b） You ought to turn off the lights when you leave the room.改（为一般疑问句）_I_ _off the lights when I leave the room?c）You ought t

12、o 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_ _ _o ra n g e 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