现在进行时的讲解与练习

现在进行时的讲解与练习。基本用法：（1）表示（说话瞬间）正在进行或发生的动作。 （2）也可表示当前一段时间内的活动或现阶段正在进行的动作。（二）谓语构成：be (am/ is/ are)v-ing （动词的现在分词） Im watching TV now. Theyre playing football.（三）现在分词的构成。（1）一般情况下在动词词尾加ing。gogoing ask asking looklooking（2）以不发音的e结尾的动词，去掉e加ing。have having taketaking makemaking writewriting（3）以一个辅音字母结尾的重读闭音节，双写最后一个字母，再加-ing。getgetting sitsitting putputting runrunningswimswimming beginbeginning shopshopping(4) 在以ie结尾的动词后，改ie为y，再加-ing。如：lielying, diedying, tietying.（四）现在进行时态的肯定式、否定式、疑问式及简略回答。（1）肯定式：bev-ing She is singing in the next room.（2）否定式：benotv-ing The students arent cleaning the room.（3）一般问句：be动词提前。肯定答语Yes，主语be，否定答语No，主语be not。Are you playing the computer game? Yes, I am. /No, I am not.（4）特殊问句：对谓语动词进行提问的：Whatbe 主语doing其他？What is the old man doing under the tree?对其他成份进行提问的，疑问词一般疑问句？Where is the boy swimming?Who is she waiting for?三. 现在进行时与一般现在时的区别（一）现在进行时表示动作的暂时性，而一般现在时表示动作的习惯性和经常性I am watching TV now. （暂时性）I watch TV every day. （经常性）（二）现在进行时可表示短暂性动作，而一般现在时表示长久性动作。Lucy is living in Beijing.（短时间居住）Lucy lives in Beijing. （长久性居住）（三）现在进行时表示的动作可带有感情色彩，而一般现在时所表述的动作通常是事实。Youre always forgetting the most important things. （责备）He is always helping others. （赞扬）He often helps others. （事实）（四）有些动词不能用进行时，know, understand, love, like, hate, wish, want, think, hope, have, believe, agree, hear, see, notice，等等。这些动词通常用一般现在时表示说话时发生的动作。I have a lot of friends here.She wants to buy a new bike.【典型例题】一、用括号内所给单词的适当形式填空。1. Look! There _(be) a lot of people over there. What _they _ (do) now?2. What _ your mother _ (do)? She is a teacher.3. It _ (rain) heavily outside now. You must stay at home.4. Dont sing. The baby _(sleep).5. My brother _ (not like) playing basketball, but he _ (like) playing football.6. What _ you usually _ (do) on Sunday? I usually _ (stay) at home and _ (do) my homework.7. Listen! The girls _ (sing) in the next room.8. My sister _ (want) to be a teacher.9. Its seven oclock now. The Greens _ (have) supper.10. He often _ (swim) on Sundays. Look! He _ (swim) at the pool.二、单项选择1. I want _ homework now. A. doing B. to do C. to do my D. do my2. Its time _. A. go to school B. play games C. to go home D. to do my homeworks3. The boy is _ to his teacher. A. saying B. speaking C. talking D. telling4. Im _ a book in the room. A. watching B. seeing C. reading D. looking5. Where _ he _ from? A. is, come B. do, come C. does, come D. is, from6. Do they have a new car? Yes, _. A. they are B. they have C. they dont D. they do7. He often _ supper at 6:00 in the evening. A. have B. has C. is having D. is eating8. Its 6 oclock in the morning. He _. A. get up B. gets up C. is geting up D. is getting up9. What are you doing? Im _ TV. A. watch B. watches C. to watch D. watching10. We _ any Chinese classes on Friday. A. are having B. arent having C. dont have D. are