He says the idea is for people not to be selfish by keeping a book to gather dust on a bookshelf at home.
请问老师:
for people not to be selfish做表语,请问by keeping a book to gather dust on a bookshelf at home也是属于不定式的内容吗?介词短语作状语修饰selfish吗?
by keeping...介词短语是形容词selfish的补足语。传统语法会分析为介词短语修饰形容词,故为形容词的状语。for people not to be selfish by keeping a book to gather dust on a bookshelf at home整体是一个不定式短语,在says后的that从句中作表语。
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