题目内容：

The commercial advertisement is one of the things that we have to tolerate when we are watching tv
when后面能去掉we are吗

优质解答

可以,把它去掉以后就变成了状语从句的省略.类似的列子还有很多,when doing homework=when sb+be doing homewrok,when coming to school=when you come to school等等 补充一点省略的知识：省略的时候是从句里的主语...