内容正文:
Module 1 Country life
Unit
raa
et0se
0
Let's learn
名词单复数
规则的变化
What's this in English?
It's an apple.
What are these?
There are two
apples.
What's this in English?
It's a pen.
@
What are these?
There are pens.
What's this in English?
一限巢己
It's a book.
What are these?
SK8SE4EN
CH
There are books.
What's this in English?
It's a candy.
What are these?
There are candies