I was trying my best to finish my work when my sister was whtchin_英语解答

I was trying my best to finish my work when my sister was whtching TV 这句话有语法错误吗?

人气：342 ℃　时间：2019-11-01 11:48:59

解答

这里主要强调两件事情的同时发生,用while 比when更好.