文档介绍：Unit 5
It must belong to Carla.
Work hard!
You are sure to SUCCEED!
Never let YOUSELF down!
Ready?
GO!
Unit 5
It must belong to Carla.
Work hard!
You are sure to SUCCEED!
Never let YOUSELF down!
Ready?
GO!
Who is the man?
He can’t be Bill Gate.
?
他不可能是比尔·盖茨。
He may be Liu Xiang.
他也许是刘翔。
He must be Liu Dehua.
他一定是刘德华。
Oh, yes. He is Liu Dehua.
can’t在此表示猜测，译为“不可能”，后接动词原形。
Leading in
Look and guess
may在此表示猜测，译为“也许，可能”，后接动词原形。
must在此表示猜测，译为“肯定，极可能”，后接动词原形。
Who is he?
He can’t be …
may (could) be …
must be …
?
Look and guess. Using “can’t, may, must”
Look at the picture. Write the things you see in the correct columns in the chart.
1a
Listen and match each person with a thing and a reason.
1b
Listen and match each person with a thing and a reason.
1b
Model:
A: Whose book is this?
B: It must be Mary’s.
Hemingway is her favorite author.
作家
PAIRWORK
1c
Ask and answer like the model.
Practise making conversations
Sample dialogue 1:
A: Look! Whose toy car
is this?
B: It must be Jane’s little
brother’s. Because he
was the only little kid
at the picnic.
Sample dialogue 2:
A: Look! Whose
book is this?
B: It must be Mary’s.
Because Hemingway
is her favorite
author.
Sample dialogue 3:
A: Whose CD is this?
B: It must be
Grace’s. Because
she always listens
to classical music.
1. The homework can’t be Carol’s. She wasn’t at school today.
[考例]
—Look at the boy running on the ground. Is it Davis?
—It _____ be him. I saw him go to the teacher’s office just now.
must B. can’t
C. could D. might (2007湖北黄冈)
Language points
B
[答案和解析] B。can’t表示否定的推
测；must表示肯定的推测；
could ,might表示可能的推测。
2. The French book must be Li Ying’s.
She’s the only one who’s studying
French.
[考例]
Even the top students in our class didn’t
work out the problem. So it _____ be very
difficult.
A. need B. must
C. can’