Question

3．警方正在忙于找到事故的原因．The police are busy finding out the cause of the accident．．

Answer 1

分析 The police are busy finding out the cause of the accident．

解答 答案：The police are busy finding out the cause of the accident．
這里是說客觀事實(shí)用一般現(xiàn)在時，表示正忙于做某事用be busy doing sth，主語是the police復(fù)數(shù)，故用are，找到原因查明原因用動詞短語find out，事故的原因用of所有格表達(dá)the cause of the accident．故答案是The police are busy finding out the cause of the accident．

點(diǎn)評 busy 短語的用法常用的有兩個：
be busy with sth 忙于做某事 
be busy doing sth 忙于做某事