1、He has already finished his homework. (改为否定句) He hasn't finished his homework yet. 2、They are going to visit the Great Wall next week. (对“the Great Wall”提问) Where are they going to visit next week? 3、She can play the piano very well. (改为一般疑问句) Can she play the piano very well? 4、I bought a new book yesterday. (对“a new book”提问) What did you buy yesterday? 5、He will go to Beijing by plane. (对“by plane”提问) How will he go to Beijing? 6、They have been friends for ten years. (对“for ten years”提问) How long have they been friends? 7、She is readin
