正在干什么的英文

be up to

• 正在:    in process of; in ...
• 你在干什么:    what are you doing
• 我在干什么:    what am i doing

例句与用法

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1. What were you doing at eight o ' clock yesterday morning
   昨天早上八点钟你正在干什么？
2. What were you doing when i called you on the telephone
   我打电话给你时你正在干什么？
3. What were you doing when it started to hurt
   刚开始痛的时候你正在干什么
4. What are you doing ? i am doing housework
   你正在干什么？我正在做家务。
5. What were you doing at seven this morning
   今天早上七点你正在干什么？