2019学年度北师大版选修七Unit21 Human Biology　Section Ⅴ单元语法突破　学案设计

课时训练

Ⅰ.用虚拟语气完成下列句子

1.I didn't see your sister at the meeting.If she 　　　(come) she would have met my brother.

答案:had come

2.Without electricity,human life 　　　　　　(be) quite different.

答案:would be

3.If i t had not been for the snow,we 　　　　　　(climb) the mountain yesterday.

答案:could have climbed

4.If I hadn't had your help,I 　　　　　　(not finish) the work ahead of time.

答案:wouldn't have finished

5.The conference wouldn't have been so successful if we　　　(not make) adequate preparations.

答案:hadn't made

6.If he　　　　　　(take) his doctor's advice,he might still be alive.

答案:had taken

7.If he 　　　(be) free,he would help us.

答案:were

8.If I 　　　　　　(see) the film,I would have told you about it.

答案:had seen

9.You didn't let me drive.If we 　　　(drive) in turn, you wouldn't have got so tired.

答案:had driven

10.If he 　　　　　　(come) here, he would tell us about it.

答案:were to come/came/should come

Ⅱ.用恰当的情态动词填空

1.Mark 　　　 have hurried. After driving at top speed, he arrived an hour earlier.

答案:needn't

2.You 　　　 park here! It's an emergency exit.

答案:mustn't

3.Just be patient.You 　　　 expect the world to change so soon.

答案:can't

4.-　　　 I take the book out?

-I'm afraid not.

答案:May

5.Lifting off at sunrise, the hot air balloon goes wherever the wind 　　　 blow.

答案:may

6.-This dish is really delicious.　　　 you please say it in Chinese?

-Sure, we call it "doufu".

答案:Could

7.Johnny's uncle promises that the boy 　　　 get a nice pre sent on Christmas