词性不同，alike 副词做表语。like 介词，后面接名词。不管是like（像）还是alike都不是动词，不能做谓语。正确的应为：
His son looks like his father.
His son and his father look alike.
alike 他是一个形容词和副词
相似的；相同的
The 2 sisters are very alike.
两姐妹非常相像。
They were all dressed alike in white dresses.
他们都是一样的白色装束。
like则是一个介词后面要跟宾语
He is like me.
like 是个介词 alike 是形容词,做表语。
ALIKE 是表语动词 用be alike
like 是动词like sth/doingsth
词性不同
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