造一个用when和while引导的从句

题目

造一个用when和while引导的从句
他作案的时候是清醒的
我的是：he was conscious when he commited?（还是when he was commiting?还是when he commiting?
he was conscious while he was commiting
我的句子错在哪?

答案

he was conscious while he was committing.是正确的.
句中“作案的时候”是一个较精确的时间状语,故用过去进行时,不用一般过去时.至于用when还是while在这里是一样的,美国人用while多.
注意：when he commiting是不可能的,这是初中的错误水平,当逻辑主语一致时when he was commiting中he was 可同时去掉,写成when commiting,太重要的知识点了.