"Books which cost half price are sold quickly"
Can anyone explain to me please why "book" in this sentence is the subject? And why it is not the object?
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Sign up to join this community"Books which cost half price are sold quickly"
Can anyone explain to me please why "book" in this sentence is the subject? And why it is not the object?
The phase "which cost half price" is just something that describes "books". It is an "adjective phrase." Look at it like this: Books (which cost half price) are sold quickly.
(subject) (adjective phrase) (verb) (adverb)
Books which cost half price are sold quickly.
(I also agree with smjpilot that "that" should replace "which" in this sentence.)
Books which cost half price are sold quickly.
The clause books which cost half price is employed as the subject of your example sentence. This subject clause has its own subject which is books.
Books which cost half price are sold quickly.
'Which' would be used to provide additional information about books, not to distinguish some books from other books.Since the 'cost half price' is an important part of the meaning, the sentence should be constructed as:
Books that cost half price are sold quickly.
The verb in this sentence is to sell, and the verb is applied to the books, so the books are technically the object of the sentence, as well as a subject. The passive voice emphasizes that the important idea is about the object, and the subject (the bookseller that would be involved if the sentence was constructed using the active voice) is not even mentioned.