答:1. This is my book. - These are my books.This desk is his. - These desks are his.This is a red coat.This is her dress.This is a big classrom.2. That is a car. - Those are cars.That is his shirt. - Those are his shirts.That is my desk.That green pen ...
答:可以,不过有几种情况是只可以用which不能用that。定语从句中的关系代词 that 或 which 既可以指代单数先行词,也可以指代复数先行词。指代复数先行词时,要注意从句的谓语动词要与复数先行词保持数的一致。例如:This is the parcel that is going to beposted. 这是准备要寄出的包裹。These are the...
答:that is the library改为复数句: that is libraries。library n. 图书馆,藏书楼;(书、激光唱片等的)私人收藏;书房,书斋;文库,系列丛书(激光唱片集,成套录像等);软件库 短语 national library 牙买加国家图书馆 ; 国立图书馆 ; 圭亚那国家图书馆 British Library 大英图书馆 ; 图书馆 ; ...