Be动词的专项练习一．改变句子：
1.This is an orange.
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：__________________________________
复数句：__________________________________
2.That is his pencil..
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：__________________________________
复数句：__________________________________
3.These are blue bags.
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：_________________________________
单数句：__________________________________
4.Those are green buses.
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：_________________________________
单数句：__________________________________
5.It is a rubber..
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：_________________________________
单数句：__________________________________
6.I am a pupil..
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：__________________________________
复数句：__________________________________
7.He is a teacher.
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：__________________________________
复数句：__________________________________
8.Our pupils are young.
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：_________________________________
单数句：__________________________________
9.They are green apples.
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：_________________________________
单数句：__________________________________ 10..Their desks are yellow.
否定句：__________________________________
一般疑问句：__________________________________ 肯定回答：__________________________________ 否定回答：__________________________________ 划线：_________________________________
单数句：__________________________________。