初中英语情态动词.ppt

Yes, I will.
I will love you forever.
shall should
shall 1.征求对方意见，用于第一，第三人称疑问句中
Shall we hold our wedding this Sunday?
Ok.
shall should should 意为：应该。
表达义务，职责（说话人的观点）
Practice makes perfect
A. may, could B. can, must C. can, mustn’t D. may, can’t
will would
1. 用于第二人称的疑问句中，表“请求、建议”等; would (委婉)
2. 用于表示意志，意愿或决心，意为“会，愿意”。 will指现在，而would指过去。
Will you marry me?
Yes, you may. Yes, you can.
May I go to the Ball? No, you mustn’t. No, you can’t.
must
have to
1. 否定mustn’t, “禁止” 2. 否定回答用 needn’t
need
No, you needn’t. No, you don’t have to.
CONTENTS
一、情态动词的那些事儿 二、情态动词的那些一般用法 三、情态动词的那些推测用法 四、情态动词的那些特殊用法
情态动词的那些事儿
PART ONE
情态动词的那些词儿
may
might
can
could
will
would
shall
should
must
have to need…
情态动词的那些特点
As human, we should be kind to others.
Practice makes perfect
1. --Many people play with mobile phones all day instead of reading books. --That’s too bad. Everyone _______ be a book lover. Reading is more enjoyable
Must I do the housework? Yes, you must.
must
have to
3. must 与have to 的区别
need
I must go to the Ball. But I have to finish the housework, before I go to the Ball.
PART TWO
情态动词里的那些一般用法
① may/might ② can/could ③ will/would ④ shall/should ⑤ must/have to/need
may might
意义：请求获得对方的允许，“可以”might (委婉语气)
肯定--may/can
否定--mustn’t/can’t
Could I dance with you? Yes, you can.
知识要点总结
情态动词 本意
否定含义
may, might can, could
must
允许
能力， 允许
必须
不可以
不能 不可以
禁止
回答
may/can mustn’t/can’t
can can’t
must needn’t
ห้องสมุดไป่ตู้ractice makes perfect
Cai Xukun can sing songs well. Fan Chengcheng can sing songs well too. But Dong Yanlei can’t sing songs well.
1. 不能单独作谓语，必须与动词原形连用 2. 没有人称和数的变化 3. 有助动词的作用
can could
1.表具备某种能力：能，能够； could (过去的能力) Cinderella could dance well in the past. Cinderella can dance well now.
can could
2. 表请求和允许：“可以”= may； could (委婉语气) 回答：肯定--can 否定--can’t
A. must; mustn’t B. may; can’t C. should; can’t
Practice makes perfect
3. --Mum, _____ I play football this afternoon ? --Sure, but you _____ finish your homework first.
用于肯定句 “可能”
might (可能性更小)
用在肯定句中 “一定”
Guessing game
It’s a he. It’s not very tall. He played as Tang Ren in the movie Detective Chinatown.
Who is this? It ____ca_n_’_t___ be Fan Bingbing. It _m__ay_/_m__ig_h_t_ be Guo jingming. It ___m__u_s_t ___ be Wang Baoqiang.
1. --Must he sing the song in English ? --No, he _____.
A. needn’t B. can’t C. mustn’t
Practice makes perfect
2. --Mum, _____ I visit the science museum tomorrow ? --I’m afraid you_____. It is closed on Monday.
A. may B. should C. would
Let’s take a break!
PART THERE
情态动词那些推测用法
may (might) can (could) must
0％
can/could
< 50％ may/might
<
100％
must
用于疑问句，否定句
“不可能，可能吗”
could (可能性较小；可用于 肯定句，疑问句，否定句)