does he have a model piane?怎么改成否定句?

does he have a model piane?怎么改成否定句? tom is making a model piane(否定句 一般疑问句） Does he have a tennis racket?变否定句 does he have a sister 作否定回答怎么写 Q:He often does his homework at home{改成否定句} A:He doesn't oft I have a brother.怎么改成否定句和疑问句 I have a tennis bat怎么改成否定句 he wants a new car怎么改成否定句 I have never traveled on a piane怎么改为一般疑问句并做否定回答 Mary does the housework.怎么改成否定句? Tom does his homework at home 怎么改成否定句? 英语：They have a tenuis racket.(变否定句） Does he have TV?(肯定句）