在线求指导：句型转换. 1. 句型转换. 1. This is a ruler. (改为一般疑问句)

1. This is a ruler. (改为一般疑问句)
______a ruler?
2. That's a box. (改为一般疑问句并作肯定回答)
—______a box?
—______.
3. Is this his pencil sharpener? (改为陈述句)
______ pencil sharpner.
4. Are these his Chinese books? (作否定回答)
______________________________.
5. That is an eraser in English. (就画线部分提问)
______ in English?
6. do, How, spell, you, it (连词成句)
______________________________.