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Unit 4 Road safety
语法梳理：情态动词精讲精练 (含答案)
情态动词
情态动词本身有一定的词义，是表示语气的单词。但是情态动词不能独立在句子中作谓语,必须和
动词原形一起构成谓语。常见的情态动词有 must, can, could, may,should, need 等。
1. 情态动词 must和can 的用法
中文意思 用法 否定形式
表示必要或很重要，指因需要、命 must not/mustn't
must 必须 令或强制而必须做某事
后接动词原形，没 (表示强烈禁止)
有人称和数的变化
表示一般能力，指本身具有的能 cannot/can't
can 能；可以；会
力、体能等
例句:I must go to the bank and get some money. 我必须去银行取一些钱。
Don't be impatient. I can explain it to you.
不要不耐烦。我可以跟你解释这件事。
Cars must not park in front of the entrance. 车辆不可以停在入口前面。
I can't tell if this is his handwriting. 我无法辨认这是不是他的笔迹。
2.含有情态动词的不同句式的句型结构
(1) 肯定句：主语+情态动词+动词原形(+其他).
例句: You should be more careful when driving. 你开车时应该更加小心。
(2) 否定句：主语+情态动词+not+动词原形(+其他).
例句: The report may not be complete. 这份报告可能不完整。
(3) 一般疑问句：情态动词+主语+动词原形(+其他)?
例句: —Must I go to see the doctor? 我必须去看医生吗?
—Yes, you must. 是的,你必须去。/No, you needn't. 不,你不必。
易错提示►对由 must开头的一般疑问句进行否定回答，答句中的否定词要用 needn't, 而不用
mustn't。
(4) 特殊疑问句：特殊疑问词+情态动词+主语+动词原形(+其他)?
例句: What could the little boy do six years ago? 这个小男孩六年前会做什么?
专题训练一、从方框中选择合适的单词填空。(可重复使用)
1. You ________go to bed before 8 o’clock. Don’t be late.
must
2. Listen! You ________ chase each other around the classroom. mustn't
3. We ________ wait any longer! We should do something.
can
can't
4. —Mum, ________I play with my toy now?
—No, you ________. You ________ practise playing the piano first.
二、单项选择。
( )1.-- I speak to Mary? --Yes, speaking.
A.Must B.Need C.May
( )2.This maths problem is too hard. Nobody do it.
A.may not B.may C.can
( )3.--Can you speak Japanese?
--No, I .
A.can't B.mustn't C.may not
( )4.The children be careful because the floor is wet.
A.must B.can C.need
( )5.--Must we finish all these articles this morning? --No, you .
A.mustn't B.haven't C.don't have to
( )6.You go and see a doctor at once because you've got a fever.
A.can B.must C.could
三、选词填空。
1. The light is red. We ________(can't/mustn't) cross the road now.
2. The water in the stream is dirty. You ________(can/can't) drink the water.
3. The light in her room is still on. She ________(must/can) be at home now.
4.—________(Must/Can) Liu Tao ride bikes? —Yes, he ________(must/can).
四、按要求完成下列各题。
1. 你不应该以这样的方式把消息告诉她。(根据中文提示完成句子)
You ________ ________her the news in this way.
2. People could go to work by ship every day.(对画线部分提问)
________ ________people________to work every day?
3. He need drive me home.(改为一般疑问句)________ he ________ ________home?
4. You must not skate on the road.(对画线部分提问)
________ must we ________ ________on the road?
五、完形填空。
Can you ride a bike? There are so many bikes, cars and buses on the 1 , so it is very
important for riders to remember the traffic 2 .
Little children can't ride bikes in the streets, 3 it is dangerous for them. You 4 always
keep your hands on the handlebars(把手). You should ride on the right 5 of the road. Like a
driver of a car or a bus, you must 6 all the traffic signs. You must not turn 7 or go across the
road at a 8 traffic light. Usually you can turn right, but you shouldn't ride too 9 . If you want
to turn left or right 1 0 stop, you can give a sign to other riders. Follow the rules and be careful
on the road!
( )1. A. day B. road C. city
( )2. A. rules B. lights C. rulers
( )3. A. so B. but C. because
( )4. A. can’t B. should C. shouldn't
( )5. A. light B. street C. side
( )6. A. hear B. reach C. know
( )7. A. right B. left C. up
( )8. A. blue B. green C. red
( )9. A. slow B. fast C. quiet
( )10. A. or B. and C. with
safe, safely和safety的区别
1. safe为形容词，意为“安全的”，常用于系动词后作表语，也可以用于名词前作定语。
These stray animals are quite safe here. 这些流浪动物在这里相当安全。
This is a safe road. 这是一条安全的马路。
2. safely为副词,用来修饰动词(短语),意为“安全地”。
They swim safely in the swimming pool. 他们在泳池里安全地游泳。3. safety 为名词,意为“安全”。
The students are talking about the road safety.
学生们正在谈论道路安全(的问题)。
专题训练
用safe的适当形式填空。
1. It is ________ to cross the river in this boat.
2. Keep your passport in a ________ place.
3. How can we use the knife ________?
4. Parents are always worried about the ________of their children.
5. Will the money be ________locked in the drawer?
参考答案
专题训练1
一、1. must 2. mustn't 3. can't 4. can,can't, must
二、CCAACB
三、1. mustn’t 2. can’t 3. must 4. Can, can
四、1. shouldn't tell 2. How could, go 3. Need, drive you 4. What, not do
五、1. B.2. A 3. C 4. B 5. C 6. C.7. B. 8. C 9. B 10. A专题训练1
1. safe 2. safe 3. safely 4. safety5. safely
