there is a stack of books还是there are a stack of books
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thereisastackofbooks还是thereareastackofbooksthereisastackofbooks还是thereareastackofbooksthereisastacko
there is a stack of books还是there are a stack of books
there is a stack of books还是there are a stack of books
there is a stack of books还是there are a stack of books
there is a stack of books 是对的,主谓一致问题选单数
there are a stack of books
there is a stack of books
前面一种
are，后面为复数