9年级人教版全一册 Unit 8 It must belong to Carla. 课件(共14张PPT)

(共14张PPT)
It must belong to Carla.
Whose pet is it
It must be …
It could belong to …
Zhou Jielun’s
=It must belong to .
Zhou Jielun
It must be .
Modal verbs
Must might could can't
How can we use them to make inferences
Whose book is it
It must be Wen Jinmao’s.
Why
Because it has his name on it.
Can you guess what it is
It could be _________________.
It also might be ______________.
a white vase
two faces
It could be
__________.
It also might be
__________.
Can you guess what it is
three birds
a beautiful face
must /may/could/might 表示肯定推测时，must 语气最强，意思是“一定，肯定”表示很有把握。 may/could/might 语气依次削弱，意思是“也许”，把握性不大。
总结
练一练
1. --- Whose dictionary is this
--- It _______ belong to Jack. His name is on it.
A. can B. might C. must D. Could
2. --- Where is Tom
--- He isn’t come to school today. I think he _______ be ill.
A. should B. might not
C. may D. couldn’t
C
3.--- Whose bike is this
--- It _______ be Adam’s. Look! His bag
is on it.
A. may B. must C. might D. could
B
.
Look that girl, that may be Helen.
The girl can’t be Helen . Helen has gone to Shanghai.
Can’t 表示否定推测， Can’t 语气很强，意思是“不可能”表示很有把握。 May not /could not /might not 语气依次削弱，意思是“也许不，可能不”，把握性不大。
That man may not our new teacher, but I’m not sure.
Mustn’t 不表否定猜测，意思是“禁止，不许可”
.
Have a try
1.The door was locked. He have been at home.
must B. mustn’t C. couldn’t D. may
2.He be in the classroom, I think.
No, He be in the classroom, I saw him go home a minute ago
can; may not B. must; may not C. may; can’t D. may; mustn’t
3. The red bicycle ________ be Anna’s. She has a blue bicycle.
A. can’t B. mustn’t C. couldn’t D. may
C
C
A
梳理归纳
.
情态动词 must, might, could, can’t 后接动词原形,
可以表示肯定，否定的 .
It can’t/ may not /could not /might not ( )…
It might/could ( ) …
It must ( ) …
+ be
Summary:
★
★
be Tony’s （是…的）
It must
推测
不可能
有可能
肯定
belong to Tony. (属于…)
及时小结才能巩固所学知识
Thank you !