The library needs ______,but it'll have______until Sunday A.to clean;to wait B.to clean;waiting ...The library needs ______,but it'll have______until SundayA.to clean;to wait B.to clean;waiting C.cleaning;to wait D.cleaning;waiting为什么后面用to wait?
问题描述：
The library needs ______,but it'll have______until Sunday A.to clean;to wait B.to clean;waiting ...
The library needs ______,but it'll have______until Sunday
A.to clean;to wait B.to clean;waiting C.cleaning;to wait D.cleaning;waiting
为什么后面用to wait?
答
have to do 必须等到。。
答
动名词有两种形式 1. to do, 2. doing
The library needs cleaning. 如果这里要用to do 形式。要说The library needs to be cleaned. 因为library自己不能做出clean这个动作，所以要用被动。排除 A，B
have to 必须， have to wait until Sunday, 必须等到星期天。 选C
答
The library needs cleaning,but it'll (will) have to wait until Sunday.图书馆需要清洁,但它必须等待到星期日.
will + to是决定,目的,而to + wait是等待[+to-verb],即是它必须等待的意思了.