like

[Allifathima]

1. She's a great friend; we are like sisters.
2. My brother is like my father.
What is the meaning of 'like' in each sentence?
In these sentences is 'like' used as preposition or not?

[Mister Micawber]

Like (preposition) = similar to
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Native English teacher at Mister Micawber's

[Allifathima]

I thought "My brother is like my father." means
"My brother is resembling my father.".
Is it wrong?

[Beeesneees]

resembles = is similar to (particularly with regard to appearance)
My brother resembles my father.

is like = is similar to (Not necessarily in appearance. Could be mannerisms, habits, personality, etc.)
My brother is like my father.

-Often expanded to avoid ambiguity
My brother is like my father in his views on that subject.
My brother resembles my father in his views on that subject.
My brother is similar to my father in his views on that subject.
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Cheers m' dears!