Section A （Grammar Focus3c）,Unit 3 Is this your pencil?,课后作业,一、用所给代词的正确形式填空 1. John, is that _ (you) ruler? No, it isnt. Its _ (he). 2. Is this Marys book? No, it isnt _ (she). It is mine (I). 3. Are these pencils _ (you)? Yes. They are _ (I) pencils.,your,his,hers,yours,my,4. Are these Susans erasers? No, these are not _ (she) eraser. Those are _ (she). 5. Hey, Frank. Here is _ (you) pen. It isnt _ (I). Its Jacks.,her,hers,your,mine,二、按要求完成句子 1. This is my jacket.（改为一般疑问句） _ _ _ jacket? 2. Is that his eraser?（改为复数句） _ _ his _? 3. Are these Lin Taos pens?（作否定回答） _, _ _. 4. Is this her book? (改为同义句) Is this _ _? 5. Those are English books.(改为单数句) _ _ _ English book.,Are those erasers,Is this your,No they arent,book hers,That is an,三、单项填空 ( )1. This _ my ruler and those _ my pencils. A. is; is B. is; are C. are; is D. are; are ( )2. _ are my pens and _ your ruler. A. Those ; that B. These; those C. These; thats D. This; that ( )3. This is _ pen. The pencil is _, too. A. my; my B. my; mine C. mine; my D. mine; mine,B,C,B,( )4. These books are _. _ books are over there. A. my; Yours B. your; Mine C. yours; My D. mine; Yours ( )5. _ oranges? No, they are apples. A. Are these B. Is this C. These are D. This is,C,A,四、补全对话 A: Hi, Mary. 1._ B: Its a watch. A: 2._ B: WATCH. A: 3._ B: Yes, it is. A: 4._ Is it yours, too? B: No, its Marys. A: 5._ B: No, she isnt. She is in the library.,C,A,D,E,B,A. How do you spell it? B. Is she in the classroom now? C. Whats this in English? D. Is it yours? E. What about the ring?,