My father came to see me __(when/while)I stayed in Shanghai

问题描述:

My father came to see me __(when/while)I stayed in Shanghai
2.___(when/while)the famous scientist was giving a talk on travelling ,Tommy got there

1 when2.while填什么关键是看从句中动词的形式,第一句是过去式,用when ,第二句是进行时,用whilewhen用作连接词表示时间关系时,意思常常是当(在)...的时候.主句和子句句子中的动作是可以同时发生的,也可以先后发生w...