6. These are your brothers. (改为否定句)　 ________ ________ your brothers.

5. His brother is a worker. (改为一般疑问句)　 ________ ________ brother a worker ?

4. These are his brothers. (改为单数形式)　 ________ ________ his ________ .

3. Those are her cousins. (改为单数形式)　 ________ ________ her ________ .

2. This is an egg. (改为复数形式)　　 ________ ________ eggs.

1. That's my sister. (改为复数形式)　　 ________ are my ________ .

13. man ________　　　 14. woman ________　 15. child ________　　　 16. foot ________

9. leaf ________　　　　　 10. family ________　　 11. wife ________　　　　 12. dictionary _____

5. box ________　　　　　 6. class ________　　　　　 7. watch ________　　　 8. wish ________

1. desk ________　　　　 2. eraser ________　　　　 3. friend ________　　　 4. boy ________