一般疑问句以及回答一般疑问句以及回答一般疑问句的形成有三种：1.有 be 提前 be 2.有 can 提前 can 3.无 be 无 can 则选用助动词 do 或 does，当主语是三单时，选用助动词 does将下列句子变为一般疑问句，并作出肯定和否定回答。将下列句子变为一般疑问句，并作出肯定和否定回答。1.I am a boy._ _ _2.This is a picutre. _ _ _4.I am sing and song. _ _ _5.I like apples. _ _ _6.He likes apples. _ _ _7.I eat a pear. _ _ _8.He eats a pear. _ _ _9.Tom can play football. _ _ _10.There are six desks in it. _ _ _11.The doors are white. _ _ _12.I have got a cat. _ _ _13.I have a cat. _ _ _14.He is a boy. _ _ _15.He can play the piano. _ _ _16.They are Tom and Tim. _ _ _17.I live in Lanzhou. _ _ _18.He has a panda. _ _ _19.We have a happy family. _ _ _20.He lives in Lanzhou. _ _ _