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

问题描述:

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

when 应该改成while

when改while

这里主要强调两件事情的同时发生,用while 比when更好.