Unit 4 Don't eat in class.can,have to,must的用法 课件（共有PPT9张）

(共9张PPT)
Unit4 Don't eat in class.
初中英语七年级下册
正确掌握“can、have to 、和must”的用法
导入
He can sing.
He can direct films.
(导演电影)
He can play magic tricks.
He can dance.
He can play the piano.
He can be himself, Jay Chou.
He can make music.
难点突破
Can的用法
I can run fast.
1.表示有能力做 “能，会”
2.表请求，许可
3.表可能性
Can I read your newspanper
Can you help me
She can speak Spanish.
It can be quite cold.
mustn't +V
难点突破
must 的用法
必须；很重要
must+V
You must follow the rules.
You mustn't break the rules.
难点突破
have to 的用法
You have to look after your sister.
1. 必须; 不得不;
2.能运用于各种时态
Do you have to look after your sister
had
Yes, I do. No, I don't.
巩固练习
During summer vacation, we _____ go outside and we ________stay at home. However, we______ study at home. We _____ follow the rules .When we go on the Internet , we _______ chat with strangers on line.
must
mustn't
can't
have to
can
小结
can must have to
1.表示有能力做 “能，会”
2.表请求，许可
3.表可能性
必须；表示必要或很重要
必须; 不得不
can't
mustn't
借用助动词 don't have to
In 2020,We have to
suffer from the
virus.
But I believe our
humanbeing can
defeat it!
Long
time
no
see
!
we
must defeat the Covid-19 finally!