there is a book和there is one book
问题描述:
there is a book和there is one book
如题,什么时候用a/an 什么时候用one 呢
答
a 、an 啊,这个主要看名次的首个音节是否是元音,是的话用an,不是 的用a,
one 用来代指前面提到的事物,比如,I have an apple ,and she has one ,too.