2022年九年级中考英语情态动词复习课件(共16张PPT)

(共16张PPT)
情 态 动 词
情态动词的特征：
1.有一定的词义，但不能单独做谓语，必须和行为动词或系动词连用，构成谓语。
2. 无人称和数的变化
3. 后接动词原形
4. 可用来构成否定句、疑问句及简明答语。
情态动词的用法：
考点一： can ,could 的用法
can
“能，会“ = be able to 否定： can't “不能，不会”
“可以” =may 表请求或允许
can't “不可能” 表怀疑，猜测
could
can的过去式， 表示过去的能力（=was/were able to )
表示委婉得提出请求，回答用can 而不用could
表示不确定的猜测=might
表示委婉得提出个人的建议
He could swim at the age of five.
Could you pleas help me
You could help to clean up the city park.
It could be Mary’s, but I’m not sure.
1. --Listen! Is that Mary playing the piano in the room
-- No. It _______ be Mary. She has gone to London.
A. mustn't B. might not C. can't
2. Tom is five years old. He is young but he _______ fly a kite by himself.
A. could B. is able to C. was able to
3. --________ I try on those shoes in the window
-- _________. They are just on show.
A. Could; Yes, you can.
B. Can; Sorry, you couldn't
C. Could; Sorry, you can't
C
C
B
Exercises：
情态动词的用法：
考点二： may的用法
may
“可能，也许” 表示推测 用于肯定句
eg: He may come tomorrow.
“可以” 表示请求、许可 用于一般疑问句
否定回答用 mustn't/can't/ shouldn't
eg: May I borrow your book
Yes, you may. No, you mustn't/can't/shouldn't.
might
过
去
式
may not “可能不”
1.The bag ______be Susan's. But I am not sure. I only remember that
she has a pink bag like this.
A. must B. need C. may
2. -- Excuse me. Is this the right way to the Summer Palace
-- Sorry. I'm not sure because I am new here. But it _____be, I think.
A. might B. is C. must
3. --Why didn't Tim come to the meeting
-- I don't know. I thought he _______ stay up late watching TV again
last night.
A. may B. might C. must
C
B
A
Exercises：
情态动词的用法：
考点三： must 的用法
must
“必须，应该” = have to
“一定“ 表推测 eg: It must be Jim.
mustn't “禁止，不允许”.
must提问否定回答needn't = don't have to
eg: -Must I finish the work today
-No, you needn't.
注意：
have to 有人称，时态要求，must 没有
have to 的否定和疑问要借助于助动词do
1. -- Must I finish all the work this night
-- No, you _______. You can do it tomorrow.
A. mustn't B. needn't C. can't
2.--Can you go surfing with us this afternoon
-- I'd like to, but I ______ look after my sister at home, because my mother
is very busy.
A. need B. should C. have to
B
C
Exercises：
情态动词的用法：
考点四： need 的用法
need
情态动词 (只用于一般疑问句和否定句）
(否定） You needn't finish it now.
实义动词 sb need + to do
(否定）sb don't/ doesn't / didn't need to do
sth need + doing = sth need + to be done
1. --Let's go to Zhaolin Park by taxi.
-- It's not far. We _______ take a taxi.
A. can't B. needn't C. mustn't
2. -- Must I fill in the form in ink (墨水）
-- No, you _______. But you ______ fill in the form carefully.
A. mustn't , can
B. needn't, must
C. can't , must
B
B
Exercises：
情态动词的用法：
考点五： shall ,should 的用法
shall : 用于第一人称表示征求意见，询问
eg: Shall I openthe window
Shall we have lunch here
should :
shall 的过去式
“应该” 表示义务、责任 = be supposed to = be expected to
否定式 shouldn't “不应该”
1. --What time ______ we come here
-- Around four o'clock tomorrow morning.
A. shall B. should C. must
2. It was Jack's turn to watch it. He ________ be here.
A. shall B. should C. may
A
B
Exercises：
情态动词的用法：
考点六： dare 的用法
dare
“敢于”
情态动词 (用于一般疑问句和否定句中）
eg: Dare he tell you the truth
He dare not tell me the truth.
实义动词 (用于肯定句中） sb dare to do
eg: He dares to go to Africa alone.
1. Nothing in the world is easy for the man who ________ try his best to
achieve his dreams. He will regret later in life.
A. doesn't dare
B. dares not to
C. dare not
C
Exercises：
真 题 再 现
1 Nothing in the world s easy for the man who ______ try his best to achieve his
dreams. He will regret later in life. (17真题)
A. doesn't dare B. dares not to C. dare not
2. Look at the “No Parking” sign. You _______ park your car here. (18真题)
A. should B. needn't C. mustn't
3. --Listen! I think it _______ be Miss Wang singing in the office. (19真题)
--No. It _______ be her. She left for Beijing just now.
A. must; can't B. may; mustn't C. must; mustn't
4. --Mom , must I finish doing the dishes right now
-- No, you ______. Anything you like before 8:00 p.m. is OK (19真题）
A. mustn't B. needn't C. may not