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