The boy's face is like his father's.既然已经有了Be 动词is了,那为什么还用动词l

1、like 既可以做动词,也可以做介词.做动词时喜欢,如:I like playing basketball.
做介词是像,如：I look like my father.What's she like?
2、如果名词所有格后面的名词跟前面那个名词所有格后面的名词一样的时候,后面的那个可以省略.