1、 八年級同步(情態動詞專項訓練A.單項選擇。( 1. We follow the new traffic rules.A.mayB. shouldC. canD. need解析:B,表示“應當”時用should。( 2. You walked too long. You a restA. must haveB. should hadC. should haveD. will have解析:C,must表示主觀愿望,語氣強烈,意為“必須”;should“應該”,表示委婉的語氣,情態動詞后跟動詞原形。( 3. Youd better late for class , Jim.A. wont beB

2、. not beC. not toD. dont be解析: B,had better do sth. 最好做某事,表勸告或建議.否定形式是:had better not to sth. 最好不要做某事。Be late意為遲到,晚到。( 4. May I play computer games,Mom?You wash your clothes first.A. wouldB. canC. mustD. mustnt解析:C,must 表示“必須,一定要”語氣較強。( 5. Whose notebook is this?It be Nings. We can see her name on i

3、t.A. needB. mustC. cantD. can解析: B, must be表示肯定的推測。( 6. If you have headaches often,it cause diseases.A. canB. mightC. shouldD. must解析:B,might表示推測,可能。( 7. Children play on the road because its too dangerous.A. mustntB. cantC. need notD. may not解析:A,mustnt表示“不許,禁止”( 8. You read in strong sunlight.A.

4、shouldB. mayC. mustD. must not解析:D,由句意知應是否定的意思。( 9. Have a glass of water,please. Yoube thirsty after a long walk.A. canB. mustC. shouldD. have to解析: C,表示有把握的推測,故用must。( 10. You watch TV too must,because it is bad for your health.A. had betterB. had better notC. shouldD. have to解析:B,had better not,最

5、好不要( 11. Today is Sunday.He get up early,because he doesnt go to school.A. doesnt have toB. didnt have toC. wont have toD. have to解析:A,doesnt have to意為“不必”,又應此句是一般現在時的第三人稱單數.( 12. Must I stay here all the time?No,you.A. dont have toB. mustC. mustntD. need解析:A,must的否定回常用dont/doesnt have to或neednt 表不必

6、。( 13. My bike is broken. I walk to school. A. have toB. mustC. has toD. needt解析:A,have to 強調客觀上“必須”,因為My bike is broken。( 14. Must I take the medicine every day.No, you .A. must notB. may notC. dont have toD. havent解析:C,must的否定回常用dont/doesnt have to或neednt 表不必。( 15. May I play basketball.No, you .A

7、. must notB. may notC. dont have toD. shouldnt解析:A,May I?否定回答應用must not或cant。( 16.His mother is ill, he stay at home.A. mustB. mayC. have toD. has to解析: D,客觀上(His mother is ill.上不得不做的事情用have to,應是第三人稱單數。( 17. they go to the Great wall?Yes,you may.A. ShouldB. MustC. canD. Need解析:C,根據題意可知是詢問的是可能性。在疑問句

8、中表示可能用can而不用may,may表示征詢對方的同意,意為“可以”。( 18. I swim in that river?No,you . Its dangerous to swim in it.A. Must; cantB. Can; may toC. May; mustntD. Both B and C解析:C,第一句是征求對方的意見,則要用cant回答。( 19. Must I finish the work today?No,you . You finish it to tomorrow.A. mustnt; mustB. neednt; mayC. neednt; canD. cant; may解析:B,must的否定回答要用neednt,may表允許。( 20. Must