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stay here, ___ he? A. didn39。t B. did C. didn39。t C. does D. doesn39。t to D. doesn39。t D. may not( ) 1 His arm is all right. He___ go and see the doctor.A. has not to B. don39。t B. mustn39。t have to D. don39。t B. needn39。t B. can C. mustn39。 be very difficult.A. may B. must C. can D. need( ) 4 He isn39。t work out this problem, so itt D. needn39。t( ) 2 Shall I get one more cake for you, Dad?Thanks, but you___, I39。t D. may。 may not C. may。t D. may not( ) 1 He___ be in the classroom, I think.No, he ___ be in the classroom. I saw him go home a minute ago. A. can。t B. can39。t( ) 4 You___ go and see a doctor at once because you39。t B. may not C. needn39。如:She needs to e tomorrow.He (不需要)borrow money.Do they______________(需要)do homework today?5. had better的用法:had better(not) do sth 最好(不要)做某事如:You’d better _______(stay) at home. You’d better __________(not watch) TV.練習(xí): ( ) 1 John___ e to see us tonight