6.a/an

　　a book,  a peach

　　an egg， an hour

　　7.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

　　8.基数词和序数词

　　one – first， two-second，twenty-twentieth

　　9.some/any

　　I have some toys in my bedroom.

　　Do you have any brothers or sisters?

　　10.be动词

　　(1) Basic form: am/are/is

　　(2) 肯定和否定句 I am(not) from London.

　　My eyes are(not) small.

　　My hair is(not) long.

　　(3)一般疑问句： Am I a Chniese?   Yes, you are.   No, you aren’t.

　　Are they American?   Yes, they are.   No,they aren’t.

　　Is the cat fat?   Yes,it is.   No, it isn’t.