早教吧 育儿知识 作业答案 考试题库 百科 知识分享

whenDrGibbswasn'tsavinglives,hewasplantingtrees.社么意思when不是不能加两个进行时么

题目详情
when Dr Gibbs wasn't saving lives,he was planting trees.社么意思 when 不是不能加两个进行时么
▼优质解答
答案和解析
when引导时间状从时,可以主句和从句都用进行时态,表示主从句动作同时发生.
如:Father was reading a book when Mother was cooking .
妈妈做饭时,爸爸正在看书.
When Dr Gibbs wasn't saving lives,he was planting trees.
句意:当 Gibbs 大夫不在治病救人时,他就在植树