Unit 4 What are you doing?句型转换： 肯定句一般疑问句：把be动词（am/is/are）调到句首，第一、二人称互换：第一、二人称：Im drawing pictures. Are you drawing pictures? (Yes, I am. / No, I am not.) 第三人称：Amy is doing homework. Is Amy doing homework? (Yes, she is. / No, she isnt.) 【当第三人称是男性，回答时用he代替；是女性，则用she代替 ，若是复数则用they】 肯定句否定句：在be动词（am/is/are）后+ not ： I am doing my homework. I am not doing my homework. He is listening to music. He isnt listening to music. ( isnt = is not ) 划线提问： I am draw
