句型转换,按要求写出下列句子的变型。 1. This is my pencil.(变为一般疑问句并作否定回答) _______ ________ _________ pencil? No, it isn’t. 2. this, crayon, your, ? is (连词成句) _____________________ 3. There are five rulers. (就划线部分提问) __________ ___________ rulers? 4. This is a book. (就划线部分提问) __________ _________?