一、写出下列名词的复数形式
1、orange 2、class 3、 4、
5、 6、child
7、photo 8、bed 9、history 10、family
11、boy 12、dictionary
13、strawberry 14、
15、box 16、17、 18、man
19、woman 20、二、写出下列各词的复数形式
am he she it that this pen desk key
orange boy friend father brother daughter cousin case box card 三、按要求变换句型（把1—10句变为复数句）
1. This is my friend.
2. This is a bike.
3.That is her brother.
4.This is a book.
5.That is an eraser.
6.It is a red orange.
7.He is a teacher.
8. What’s this?
9.This is my mother.
10.He is a Chinese boy.
四、用所给词的适当形式填空
1、(friend). 2、