"He likes (these kinds/this kind) of Books."
1 Answer
Both of them can be correct depending on what you want to say.
He likes this kind of books. Here all books have the same type. For example, those are all novels.
He likes these kinds of books. Here the books can have different types. For example, some books are novel whereas some other are Science fiction or other kinds of books.
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Hello, Bob. Please don't give 'answers' on ELU to questions unsuited to a website aimed at linguists. Commented Dec 22, 2017 at 21:11