(完整版)初一情态动词语法讲解
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应该 意愿 敢 需要 不得不
+ 动词原形
肯定
can could may might must should
否定
缩写否定
can not can’t
could not couldn’t
may not
/
might not mightn’t
must not mustn’t
should not shouldn’t
need need not needn’t
Shall一般只能用于第一人称。 I shall think it over and Let you know my idea. 我将考虑一下此事，然后告诉你我的想法。
情态动词不能单独作谓语动词，只能与动 词原形一起做谓语，没有人称和数的变 化。
A bird can fly . Fish can’t live without water. You must hand in your homework at once. You mustn’t talk loudly in public.
7.You _______________ smoke here. It’s dangerous.
8.--May I turn on the TV? –No, you _m__a_y__n__o_t. My dad is sleeping. can’t
Test Yourself
B.单项选择：
1.--_______ I ask you a question? --Sure
can
may
must
词义 能够(表能力) 可以(表允许)
必须
肯定 主语 + can + 主语 + may + 主语 + must +
动词原形
动词原形
动词原形
否定 主语 + cannot/ 主语 + may
主语 + must
can’t + 动词原形 not + 动词原形
not/ mustn’t + 动词原形
A. May
B. Can
C. Must
D. Should
4.I’m afraid I need a pair of glasses. I ______ hardly see the words
A. May
B. Do
C. Should
wk.baidu.com
D. Am
2.—Can I go to the park, Mum?
--Certainly. But you ________ be back by six o’clock.
A. can
B. may
C. will
D. must
3.____ you dance? We need some more dancers for the talent show.
Practice
2.You ________m_a__y_______ (可以) leave now. 否定句：You may not leave now. 一般疑问句：May I leave now? 肯定回答：Yes, you may. 否定回答：No, you may not. 就划线部分提问：When may I leave?
Practice
1.My elder brother __c_a_n__________(能) drive a car. 否定句：My elder brother cannot/can’t drive a car. 一般疑问句：Can your elder brother drive a car? 肯定回答：Yes, he can. 否定回答：No, he can’t. 就划线部分提问：What can your elder brother do?
Grammar：
Modal verbs 情态动词
情态动词（modal verbs)：表示说话人的语
气或情态，如请求、命令、愿望、能力以及 可能性等。英语的情态动词有：
can/could may/might must
shall/should will/would
need have to
能够 可能 必须
Test Yourself
A.用must(not), may(not), can(not)填空：
1.—I don’t understand this word. __M__a_y_/__C_a_n_ I use your
dictionary? --Yes, please use it.
2.The traffic light is turning red. We __m__u__s_t_____ stop. 3.You __m__a__y_/_c_a_n____ borrow two books at a time. 4.Tom ____c_a_n____ play table tennis, but he ___c_a_n_’_t__ play football. 5.—Doctor, __m__u_s_t_______ I take much medicine? --No, you needn’t. But you __m___u_s_t_______ drink a lot of water. 6.Tom is good at drawing. He __c_a_n__________ draw wonderful pictures.mustn’t/cannot/may not
Practice
3.Lily ________m__u_s_t _____ (必须) go to the library. 否定句：Lily mustn’t go to the library. 一般疑问句：Must Lily go to the library? 肯定回答：Yes, she must. 否定回答：No, she needn’t. 就划线部分提问：Where must Lily go?
疑问 Can + 主语 + 动词原形？
May + 主语 + Must + 主语 + 动词原形？ 动词原形？
回答
Yes, 主语 + can.Yes, 主语 + may. No,主语 + can’t.Nnoot,.主语 + may
Yes, 主语 + must. No,主语 + needn’t.
在口语中可用can代替，但may更礼貌。
+ 动词原形
肯定
can could may might must should
否定
缩写否定
can not can’t
could not couldn’t
may not
/
might not mightn’t
must not mustn’t
should not shouldn’t
need need not needn’t
Shall一般只能用于第一人称。 I shall think it over and Let you know my idea. 我将考虑一下此事，然后告诉你我的想法。
情态动词不能单独作谓语动词，只能与动 词原形一起做谓语，没有人称和数的变 化。
A bird can fly . Fish can’t live without water. You must hand in your homework at once. You mustn’t talk loudly in public.
7.You _______________ smoke here. It’s dangerous.
8.--May I turn on the TV? –No, you _m__a_y__n__o_t. My dad is sleeping. can’t
Test Yourself
B.单项选择：
1.--_______ I ask you a question? --Sure
can
may
must
词义 能够(表能力) 可以(表允许)
必须
肯定 主语 + can + 主语 + may + 主语 + must +
动词原形
动词原形
动词原形
否定 主语 + cannot/ 主语 + may
主语 + must
can’t + 动词原形 not + 动词原形
not/ mustn’t + 动词原形
A. May
B. Can
C. Must
D. Should
4.I’m afraid I need a pair of glasses. I ______ hardly see the words
A. May
B. Do
C. Should
wk.baidu.com
D. Am
2.—Can I go to the park, Mum?
--Certainly. But you ________ be back by six o’clock.
A. can
B. may
C. will
D. must
3.____ you dance? We need some more dancers for the talent show.
Practice
2.You ________m_a__y_______ (可以) leave now. 否定句：You may not leave now. 一般疑问句：May I leave now? 肯定回答：Yes, you may. 否定回答：No, you may not. 就划线部分提问：When may I leave?
Practice
1.My elder brother __c_a_n__________(能) drive a car. 否定句：My elder brother cannot/can’t drive a car. 一般疑问句：Can your elder brother drive a car? 肯定回答：Yes, he can. 否定回答：No, he can’t. 就划线部分提问：What can your elder brother do?
Grammar：
Modal verbs 情态动词
情态动词（modal verbs)：表示说话人的语
气或情态，如请求、命令、愿望、能力以及 可能性等。英语的情态动词有：
can/could may/might must
shall/should will/would
need have to
能够 可能 必须
Test Yourself
A.用must(not), may(not), can(not)填空：
1.—I don’t understand this word. __M__a_y_/__C_a_n_ I use your
dictionary? --Yes, please use it.
2.The traffic light is turning red. We __m__u__s_t_____ stop. 3.You __m__a__y_/_c_a_n____ borrow two books at a time. 4.Tom ____c_a_n____ play table tennis, but he ___c_a_n_’_t__ play football. 5.—Doctor, __m__u_s_t_______ I take much medicine? --No, you needn’t. But you __m___u_s_t_______ drink a lot of water. 6.Tom is good at drawing. He __c_a_n__________ draw wonderful pictures.mustn’t/cannot/may not
Practice
3.Lily ________m__u_s_t _____ (必须) go to the library. 否定句：Lily mustn’t go to the library. 一般疑问句：Must Lily go to the library? 肯定回答：Yes, she must. 否定回答：No, she needn’t. 就划线部分提问：Where must Lily go?
疑问 Can + 主语 + 动词原形？
May + 主语 + Must + 主语 + 动词原形？ 动词原形？
回答
Yes, 主语 + can.Yes, 主语 + may. No,主语 + can’t.Nnoot,.主语 + may
Yes, 主语 + must. No,主语 + needn’t.
在口语中可用can代替，但may更礼貌。