九上U4T3SB。。.ppt

Unit 4 Amazing Science
Section B
Topic 3
What do you know about Mars?
3
Work alone
Match the two columns to make sentences.
( ) 1 . Life may be
( ) 2 . More satellites must be
( ) 3 . Scientific research should be
( ) 4 . Other planets may be
( ) 5 . Aliens have not been
d
c
a
e
b
a . done carefully .
b . seen by people .
c . sent into space .
d . found on other planets some day.
e . visited in the future .
情态动词+ be + done
have / has + been done
aliens/may/found
Aliens may be found in space.
clothes/can/seen
Many beautiful clothes can be seen
in the shop.
litter/mustn’t/thrown
Litter mustn’t be thrown everywhere.
bike/should/repair
The bike should be repaired at once.
含有情态动词的被动语态的结构：
情态动词+be+
may be found in space.
beautiful clothes can be seen
in the shop.
mustn’t be thrown everywhere.
bike should be repaired at once.
What’s the problem?
Sam’s watch doesn’t work.
John’s pet pig is ill.
The trees are dying.
Nobody looks after Sandy’s daughter.
It should ____ ________ first.
It should ____ ______ to the _____ ________.
They should ____ ________ at once.
She can be sent to ____ ___________.
2
1
4
3
be repaired
be taken pet hospital
be watered
her grandmother
What should be done?
Listen to 1a, try to answer the following questions.
will take part in the space flight to Mars ?
would Kangkang like to be when he grows up ? Why ?
Astronauts from China, the United States
and Russia.
He’d like to be an astronaut when
he grows up.
Read 1a and practice in pairs.