( )1.−Stop!Sir,you ________ look at your phone while riding.It's too dangerous.
−Sorry,I won't do that.
A. must B. can C. needn't D. mustn't
( )2.−I finished my homework. ________ I watch TV for a while,Mum?
−No.It's too late.You ________ go to bed now.
A. Can; can B. Must; can C. Can; must D. Must; must
点拨 第1小题，由“It's too dangerous.”并结合常识可知，骑行时看手机是非常危险的行为，应禁止这种行为，故选D；第2小题，根据对话情境可知，第一个设空处表达的是请求允许，应用can提问，第二个设空处表达的是命令，应用must，故选C。
点拨第1小题，由“It's too
行为，应禁止这种行为，故选
−Sorry,I won't do that.
A. must B. can C. needn't D. mustn't
( )2.−I finished my homework. ________ I watch TV for a while,Mum?
−No.It's too late.You ________ go to bed now.
A. Can; can B. Must; can C. Can; must D. Must; must
点拨 第1小题，由“It's too dangerous.”并结合常识可知，骑行时看手机是非常危险的行为，应禁止这种行为，故选D；第2小题，根据对话情境可知，第一个设空处表达的是请求允许，应用can提问，第二个设空处表达的是命令，应用must，故选C。
点拨第1小题，由“It's too
行为，应禁止这种行为，故选答案
(一)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）.
5. Paul has a fever and coughs a lot. He ________（can/should）go to hospital at once.
6. Here's the green man. We ________（can/shouldn't/must）cross the road.
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）.
5. Paul has a fever and coughs a lot. He ________（can/should）go to hospital at once.
6. Here's the green man. We ________（can/shouldn't/must）cross the road.
答案
1. mustn’t 2. can’t 3. must 4. Can，can 5. should 6. can
(二)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 cannot draw pictures on the wall.(对画线部分提问)
________ ________ we ________ ________ on the wall?
5. −Must I be there by eight in the morning？(作否定回答)
−________, you ________.
6. −________ ________ ________ ________ on the road?（根据答句写问句）
−I must look at the traffic lights.
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 cannot draw pictures on the wall.(对画线部分提问)
________ ________ we ________ ________ on the wall?
5. −Must I be there by eight in the morning？(作否定回答)
−________, you ________.
6. −________ ________ ________ ________ on the road?（根据答句写问句）
−I must look at the traffic lights.
答案
1. shouldn’t tell 2. How could，go 3. Need，drive you 4. What can，not do 5. No，needn’t 6. What must you do
