UC知道初一英语 按要求改写句子
来源：百度知道 编辑：UC知道 时间：2024/06/27 15:41:07
He was cleaning the blackboard when Mr.Li come in.(划线提问)
______ _______he______when Mr.Li come in？
还要理由
______ _______he______when Mr.Li come in？
还要理由
what was he doing when Mr.Li come in？
回答是过去进行时，提问也应该是过去进行时。
What was he doing when Mr.Li come in?
对cleaning the blackboard 提问，就是这样
What was he doing when Mr.Li come in？
人物和时间都有了,那就是在问你他在干什么,并且是过去进行时
What was doing
what was he doing when mr li come in?