(共16张PPT)
Unit 8
It must belong to Carla.
Section A
Grammar
人教新目标版英语九年级下册
情境导入
1
Enjoy the film!
新知讲解
情态动词表推测
新知讲解
1
It must be fun to live in a place like this.
住在这里想必一定很有意思。
It must be a pretty important date to run off
without eating.
要空着肚子走，那一定是急事。
You must have been awfully uncomfortable
to sleep on that couch.
要你睡沙发，想必一定很不舒服。
重点关注的句子
新知讲解
1
对现在情况的推测
1.must + 动词原形
be
have
know 等
状态动词
新知讲解
1
She must be wrong.
她一定错了。
The man must have a lot of money.
这个人一定有不少钱。
Everybody says I must be mad and they are probably right.
大家都说我肯定是疯了 。
新知讲解
1
He must win.
他必须要赢。
若为动作动词，通常要转换其它说法。
他一定会赢。
He must win.
He is sure to win.
新知讲解
1
对现在情况的推测
2.must + be doing
行为动词的进行式
He must be staying there.
他现在肯定呆在那里。
He must stay there.
他必须呆在那儿。
新知讲解
1
1.He must be writing a letter to his girl friend.
他一定在给他女朋友写信。
2.He must be working in his office.
他一定在办公室工作呢。
新知讲解
1
must 表过去情况的推测
must have done
must have been done
I didn't hear the phone. I must have been asleep.
我刚才没有听到电话，我想必是睡着了。
新知讲解
1
1.He must have arrived already．
他一定已经到了。
2.Over a hundred people must have been driven away
from their homes by the noise.
有100多人肯定是被噪音逼得已经弃家远去。
新知讲解
1.看！门锁着，他一定不在家。
Look！The door is locked. He must be away.
Look！The door is locked. He can’t be at home.
2.昨晚要你睡沙发了，想必一定很不舒服。
You must have been awfully uncomfortable
to sleep on that couch.
You could not have been awfully comfortable
to sleep on that couch.
否定推测用can’t /couldn’t +相应的形式。
巩固练习
1
1.You have worked hard all day.
You __________tired.
你辛苦干一整天，一定累了。
（对现在情况的推测判断）
练一练
must be
巩固练习
1
2.Someone ______________________here just now．
刚才一定有人在这里抽烟了。
3.The door is open. He __________away.
门开着，他不可能不在。
must have smoked
can’t be
练一练
课堂小结
1
归
纳
总
结
must表推测
用于肯定句
must be/ have /know状态动词
must be doing
must have done( 主动语态）
must have been done（被动语态）
can’t / couldn’t+相应的形式
用于否定句
再见！
