be good at...
be good at… : 擅长···，后接名词，动名词。 be not good at··· : 不擅长… He is good at drawing. He is not good at swimming.
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be good at… : 擅长···，后接名词，动名词。 be not good at··· : 不擅长… He is good at drawing. He is not good at swimming.
