句式变换。 （1）This is a black pen.(对划线部分提问) this? （2）My jacket is black and white. (对划线部分提问) is jacket? （3）It's an orange ruler.(改为同义句) The ruler . （4）This is my pencil.(一般疑问句，并作否定回答) this pencil? No, . （5）These are my books. (一般疑问句，并作肯定回答) these books? Yes, .
