Unit 1 Festivals around the world modal verbs

课件17张PPT。Modal verbs表示说话人的语气没有人称和数的变化basic modal verbs 基本情态动词 can could may might must shall should will would Unit 1 ought to need dareUnit 2Test yourself 测一测Coco, you _____play with the knife, you ____hurt yourself.
won’t; can’t B. mustn’t ; may
C. shouldn’t ; must D. can’t ; shouldn’t ---Will you stay for lunch ?
---Sorry , _____. My brother is coming to see me .
I mustn’t B. I can’t
C. I needn’t D. I won’tTest yourself 测一测Are you coming to Jeff’s Party ?
I’m not sure. I ____go to the concert instead.
A. must B. would C. should D. might When he was there, he ____go to that coffee
shop after work.
A. would B. should C. had better D. might Learn Modal Verbal 学一学 _____you speak English ?
Man _________live without air.
Can cannot Can ability指有能力做某事,意为”能够”Can I smoke here ?
Perhaps we can go out for a walk.permission 表示请求,允许Could 表示过去的能力
表示请求更加委婉He could swim when he was 5.
Could you lend me some money ? can / could 与 be able to 的区别be able to 表示”某事已做成功”考点The fire spread fast, but everyone in the hotel
was able to get out.注意can 的惯用语On hearing the story , I cannot help laughing .
You cannot be too careful with them.cannot help + 动名词 忍不住做某事
cannot too “无论怎么样..也不为过,越…越好 may 和 might 用may I …征询对方许可,在文体上比较正式. 但在日常口语中,特别在现代口语中,用can I ..征询对方意见更为常见.
May I smoke here? Can I smoke here ?May 表示可能性,用于推测,暗指不确定He may know Tom’s address.
He may be waiting for you at the station.
They may have got lost.考点当句中出现” I am afraid, I am not sure” 等表示不确定
含义的时候,常选用may 和might .I may go, but I am not quite sure.
I am afraid he might not come to attend the
meeting today.从语气上判断,may 所表示的可能性比might 大一点,而might 表示较多的怀疑.He may be very busy now. (可能性较大）．
He might be very busy now. (可能性教小）．Will 和would will would I will never do that again.
I will do all I can to help you.During the vacation, he would visit me every week.
Would you please tell me the way to Wenzhou
Overseas Chinese Hotel ?表示意愿，愿望，决心表示过去反复发生的动作，
或表示谦恭的请求．Shall 和should Shall 在疑问句中，用于第一，第三人称，表示征求对方意见．Shall I dance with you ?Shall he start at once?Shall 用于第二，第三人称中，表示说话人给对方的警告，命令You shall fain if you don’t work hard. (警告）　
He shall be punished. (威胁）用于法律，条约，规章，等文件中，无论主语人称如何
一律用shall Each student shall arrive at classroom before 7:05
in the morning.
should 表示劝告，建议，起同义词是ought to
表示义务，指应该做，且有道义上的责任．
　　　　表示期待，用于表达合理的推断或明显的结果 You should go to class right away.
It is 3 o’clock, the football game should begin soon.
I should help him because he is in trouble.
考点Should 表示惊讶，忧虑，惋惜，　意思“竟然，竟会”常用在
I’m surprised, it’s a pity, you cannot imagine 等结构中．
It is a pity you should be so careless.
I am surprised she should have done such a thing.Must 和 have to I must study hard, because _________________.
I have to study hard, because _______________.We mustn’t ____________________in class.
We mustn’t ____________________in dormitory.must表示推测 考点He must be working in his office.
He must stay there. He must be at home.下面哪些表示猜测？must用在肯定句中表示较有把握的推测，意为“一定”。
2) must表对现在的状态或现在正发生的事情的推测时，
　 must 后面通常接系动词be 的原形或行为动词的进行式。 他现在肯定呆在那里。
________________________ He must be staying there.3) must 表示对已发生的事情的推测时，must 要接完成式。I didn't hear the phone. I _______________________
(我刚才没有听到电话，我想必是睡着了。)must have been asleep 如何表示否定的猜测？Do exercises. 练一练“Write to me when you get there.
“ _____”.
I must B. I should C. I will D. I can My MP3 has disappeared. Who ____have taken it?
A. Should B. must C. could D. would --Excuse me. Is this the right way to Wenzhou Middle
School?
--Sorry. I am not sure. But it _____be.
A. might B. will C. must D. can Look, it _____be Coco.
No, it _____be him. He has gone abroad.
may, mustn’t B. must, may not
C. must, can’t D. can, may not