1. This is my grandmother. (改否定句) 
    __________________________________________
2. His telephone number is 535-2375. (改一般疑问句) 
    __________________________________________
3. It's his backpack. (改一般疑问句) 
    __________________________________________
4. That's a pencil-case in English. (对画线部分提问) 
    __________________________________________
5. That boy's name is Jeff. (对画线部分提问)
    __________________________________________
6. These are her brothers. (改否定句) 
    __________________________________________
7. Those are my books. (对画线部分提问) 
    __________________________________________
8. Is he your friend? (肯定回答) 
    __________________________________________
9. Are they your teachers? (否定回答) 
    __________________________________________
10. Dave and Anna are my friends. (改一般疑问句)
   __________________________________________

1. This is his brother. (改为复数句子)
     ______ are their______ .
2. That girl is my sister. (改为一般疑问句)
     ______ that girl______ sister?
3. Those are my friends. (改为单数句子)
     ______ ______ my______.
4. They are English books. (改为单数句子)
     ______ is______ English______.
5. She is my grandmother. (改为否定旬)
    She______ my grandmother.