[Grammar] You look like your mother does.

[rock-onn]

You look like your mother does.

Why is 'does' at the end of the sentence wrong?
The grammar book says it is incorrect sentence, but doesn't mention the reason.

 

[TheParser]

The grammar book says it is incorrect sentence, but doesn't mention the reason.

NOT A TEACHER

I thought that this information might interest some of my fellow learners.

""You look like your mother" = You and your mother have a similar appearance (hair, eyes, nose, etc.).

According to my books, the sentence should be parsed like this:

You = subject.
look = linking verb. (It is NOT an action verb, such as "He looks at a painting in the museum.")
like = this word in this sentence is technically an adjective.
unto = this is the missing preposition that people NO longer use.
your mother = this noun phrase is the object of the "understood" preposition "unto."

Thus: You look like unto your mother.

Compare: He looks like (unto) a nice person. I think that I can trust him. / She looks like (unto) a well-educated person. I think that she will have the correct answer to my question.

 

[jutfrank]

The does at the end of the sentence is wrong because it's unnecessary. The verb structure to remember is simply:

• to look like somebody