Unit 1 We have new friends.
I(我)is(是（第三人称单数）)what(什么)are(是（复数；第二人称单数）)you(你；你们)where(哪里)your(你（们）的)name(名字)更多单词 >>
Unit 3 My father is a writer.
a(一个)an(一个（后跟元音）)this(这；这个)father(父亲；爸爸)mother(母亲；妈妈)who(谁)aunt(姑母；姨母)family(家；家庭)更多单词 >>
Unit 4 Where do you work?
in(在......里)on(在......上)grandfather(（外）祖父)grandmother(（外）祖母)hospital(医院)at(（后面接邮件地址）)library(图书馆)study(书房)更多单词 >>
