小学二年级英语：不可数名词知识点（全） 不可数名词(单复数形式不变) bread, rice, water ,juice etc. 缩略形式 I'm = I am you're = you are she's = she is he's = he is it's = it is who's =who is can't =can not isn't=is not etc a/an a book, a peach an egg an hour Preposition: on, in ,in front of, between, next to, near, beside, at, behind. 表示时间： at six o'clock, at Christmas, at breakfast on Monday on 15th July On National Day in the evening in December in winter 基数词和序数词 one - first two-second twenty-twentieth Some /any I have some toys in my bedroom. Do you have any brothers or sisters? 本文来源：https://www.wddqw.com/doc/3d2513260875f46527d3240c844769eae109a32a.html