By the time he was 14,he was able to play the guitar.By the time不是加过去完成时吗?这句话怎么回事?难道是主句强调动作时才用过去完成,这里是状态就用一般过去就行了?麻烦讲清楚谢

分类: 作业答案 • 2021-12-29 14:27:51

问题描述：

By the time he was 14,he was able to play the guitar.By the time不是加过去完成时吗?这句话怎么回事?难道是主句强调动作时才用过去完成,这里是状态就用一般过去就行了?麻烦讲清楚谢谢最好有例子

答

be able to 没有完成时的用法