小学二年级英语语法：不可数名词等

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?