You know watching TV too much is bad for your eyes.此句中为什么用watching而不用watch?

watch 是动词
know后接宾语。即watching TV too much is bad for your eyes作know的宾语从句。而watching TV too much 又做宾语从句中的主语。watching是watch的动名词形式。用动名词形式做主语。一个句子中不能出现两个动词。

温馨提示：答案为网友推荐，仅供参考

当前网址：https://verywind.cn/ee/vrv7xex3.html