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Module 12 Help
模块同步语法精讲精练
③Let
型祈使句：
Let
＋
sb.
＋动词原形＋其他．
eg
：
Let's play football.
让我们踢足球吧。
④
No
型祈使句：
No
＋
v.ing
形式
/
名词
(
表示禁止
)!
eg
：
No smoking
！禁止吸烟！
No photos
！禁止拍照！
►
祈使句的否定形式
①
Do
型和
Be
型的否定句式都在句首加
don't
。
eg
：
Don't forget me
！不要忘记我！
Don't be late for school
！上学不要迟到！
②
Let
型的否定句有两种：
Don't
＋
let
＋宾语＋动词原形＋其他
/Let
＋宾语＋
not
＋动词原形＋其他。
eg
：
Don't let him go swimming.
＝
Let him not go swimming.
不要让他去游泳。
②may
，
could
，
might
表示可能性较小的肯定推测，意为
“
可能，也许
”
。
eg
：
You may be right.
你可能是对的。
He could/might be running for exercise.
他可能正在跑步锻炼。
►
否定推测
①
can't
表示有把握的否定推测，意为
“
不可能
”
。
eg
：
That can't be Mary.She's ill in hospital.
那不可能是玛丽，她生病住院了。
②
may not/might not/could not
表示不太有把握的否定推测，意为
“
可能不
(
会
)
是
”
。
eg
：
He could not/might not be at home.I'm not sure.
他可能不在家，我不确定。
►
疑问句中的推测
疑问句中的推测，常用
can
或
could
，意为
“
可能
”
。
eg
：
There is someone outside.Who can it be
？外面有人，会是谁呢？
一、根据句意，选择方框中的单词填空。
1
．
—Isn't that Ann's mother over there?
—No
，
it ________be her.I'm sure she doesn't wear glasses.
2
．
—Where's David?
—He________ be on the playground because he is fond of playing basketball.
3
．
—What will the weather be like tomorrow?
—It _____________be rainy
，
cloudy or sunny.Who knows?
can't
must
could/may
4
．
—Where is Daning?
—He ___________be in the classroom
，
but I'm not sure.
5
．
This problem __________be very hard.Few students can work it out.
may/could
must
二、单项选择。
6
．
________ get off the bus before it stops.
A
．
Don't
B
．
Doesn't
C
．
Didn't
7
．
—Someone is knocking at the door.________ it be Betty?
—No
，
it ________ be her.She left for England this morning.
A
．
Must
；
can't B
．
Can
；
can't
C
．
Could
；
mustn't D
．
May
；
mustn't
A
B
8
．
_________ harder and you'll succeed sooner or later (
迟早
)
．
A
．
Study B
．
To study C
．
Studying D
．
To studying
9
．
Let's __________on time for classes.
A
．
be B
．
be not C
．
are D
．
not are
10
．
__________ wake up your sister
，
Tony.She needs a good sleep.
A
．
Don't B
．
Doesn't C
．
Not D
．
No
A
A
A
11
．
—Excuse me
，
whose Japanese book is this?
—It _________be Tom's.In our class
，
only he is studying Japanese.
A
．
must B
．
can't C
．
would D
．
could
12
．
—You _______be happy with the strong public support you've received.
—Yes
，
you're right.I'm really excited.
A
．
may B
．
can C
．
must D
．
need
13
．
—Jim
，
________ read books while you are walking in the street.It's very dangerous.
—OK
，
thank you.
A
．
don't B
．
doesn't C
．
won't D
．
can't
A
C
A
14
．
—Where are you going this month?
—We _______go to Xiamen
，
but we're not sure.
A
．
needn't B
．
must C
．
might D
．
mustn't
15
．
—I'm sorry to tell you that Mr Li was badly hurt in a traffic accident yesterday.
—Oh
，
it ______be true.I saw him in the office just now.
A
．
can't B
．
mustn't C
．
needn't D
．
don't
C
A
( )16.Which of the following signs means
“
No photos
”
？
D
三、根据句意，用括号中所给单词的适当形式填空。
17
．
It's an important meeting.___________ (not be) late.
18
．
________ (look) out
！
A car is coming.
19
．
____________
(not talk) and _________(read) aloud.
20
．
____________ (not leave) your homework for tomorrow
，
Larry.
21
．
Lingling
，
________ (give) us ten years and just see what our country will be like.
Don't_be
Look
Don't_talk
read
Don't_leave
give
四、按要求完成下列句子。
22
．
Be quick.(
改为否定句
)
Don't_be_quick
．
23
．
You can't eat food in class.(
改为祈使句
)
Don't_eat_food_in_class
．
24
．
You must walk to school today.(
改为祈使句
)
Please_walk_to_school_today
．
25
．
You can't be late for class next time.(
改为祈使句
)
Don't_be_late_for_class_next_time
．
26
．她不可能在等你。
She _________________for you.
27
．他喜欢读书，现在他一定正在图书馆读书呢。
He likes reading.Now he _______________in the library.
28
．你走了那么长的路，一定累了吧。
You _________________after your long walk.
can't be waiting
must be reading
must be tired
五、情景交际：选择方框中的选项补全对话。
A
：
My boy
，
what did you learn from the last module?
B
：
29._____
A
：
OK.Let me ask you some questions about them.
B
：
Please!
A
：
If you're in a high building
，
what should you do when the earthquake happens?
B
：
30._____
A
：
When is the best time to leave?
B
：
31.______
B
C
E
A
：
Can you use the lift?
B
：
No.
32.______
A
：
Do you know anything about first aid?
B
：
Yes.
33.______
A
：
Great!
A
．
It's too dangerous.
B
．
Safety and first aid.
C
．
Find a chance to leave the building quickly.
D
．
I also learned how to get help
，
such as shouting for help and calling 120.
E
．
When the ground stops shaking.
A
D
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