what are you going to do after finishing your homework?为什么是finishing?而不是fwhat are you going to do after finishing your homework?为什么是finishing?而不是finish?

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what are you going to do after finishing your homework?为什么是finishing?而不是f
what are you going to do after finishing your homework?为什么是finishing?而不是finish?

介词后面加动词的-ing形式.
动词ing
就是动名词形式,介词+宾语(名词)

在英语里，介词后面加名词性质的词。
在你的这个句子里，finish是一个动词原形，不能直接跟在after这个介词后面，所以加一个ing变成名词形式，就可以用了。
其他的例子：
My mom will stay at home on Monday. at 后面是名词home
I am good at painting. at 后面是名词形式的动词painting...

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在英语里，介词后面加名词性质的词。
在你的这个句子里，finish是一个动词原形，不能直接跟在after这个介词后面，所以加一个ing变成名词形式，就可以用了。
其他的例子：
My mom will stay at home on Monday. at 后面是名词home
I am good at painting. at 后面是名词形式的动词painting

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what are you going? what are you going? What are you going. or just can't understand what you are going throngh? What are you going.【改错】 what are you going?就是going you don't know what presents you are going to get是什么从句 You and a frien are going out.You are ready,but he or she isn't.What do you say? What are you going to do tomorrow? what are you going to take? what are you going to take是什么意思 what are you going to take? WHAT ARE YOU GOING TO EAT TODAY? What are you going to do today. What are you going to do tomorrow? what are you going to do造句 what are you going to do What are you going to do today?