be good at后面应该加名词或者动名词,也就是be good at sth.与be good at doing sth
因为at是介词,所以后面应加名词或是动名词。
比如
you are good at english.
you are good at speaking english
I'm good at Chinese.
I'm good at playing basketball.
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转载请注明:日记男孩的博客 » be good at (擅长做某事) 的用法