初一英語—現在進行時

現在進行時的講解與練習。（一）基本用法：（1）表示（說話瞬間）正在進行或發(fā)生的動作。Imvisitingmyfriendsnow. （2）也可表示當前一段時間內的活動或現階段正在進行的動作或存在的狀態(tài)。 Heisalwaysworkinghard.他總是非常努力地工作。(表示贊揚)（2） 謂語構成：be (am/ is/ are)v-ing （動詞的現在分詞）【注意】be動詞要與主語的人稱和數保持一致。如： Im watching TV now. 我現在正在看電視。 Theyre playing football. 他們正在踢足球。（3） 現在分詞的構成。（1）一般情況下在動詞詞尾加ing。 gogoing ask （問，詢問）asking looklooking（2）以不發(fā)音的e結尾的動詞，去掉e加ing。 have having taketaking make（做，制造）making write（寫）writing（3）以一個輔音字母結尾的重讀閉音節(jié)，雙寫最后一個字母，再加-ing。 getgetting sit（坐）sitting put（放）putting run（跑）running swimswimming begin（開始）beginning shopshopping(4) 特殊形式 lie-lying die-dying （四）現在進行時態(tài)的肯定式、否定式、疑問式及簡略回答。（1）肯定式：主語+bev-ing +其他 He is running. 他正在跑。 The students are cleaning the room now .（2）否定式：主語+benotv-ing +其他 He is not running.The students arent cleaning the room now. 這些學生現在沒有在打掃房間。（3）一般問句：be動詞提前?！癇e+主語+v-ing+其他？” 肯定答語Yes，主語be.否定答語No，主語be not.Is he running? Yes, he is. No, he isnt. Are The students cleaning the room now? Yes, they are. No, they arent.（4）特殊問句式： “疑問詞+be 主語v-ing其他？”a. 對謂語動詞進行提問的：Whatbe 主語doing其他？What is the old man doing under the tree? 那個老人正在樹下面做什么呢？b. 對其他成份進行提問的，疑問詞一般疑問句？Where is the boy swimming? 那個男孩正在哪里游泳？Who is she waiting for? 她正在等誰呢？五、 現在進行時與一般現在時的區(qū)別（一）現在進行時表示動作的暫時性，而一般現在時表示動作的習慣性和經常性 I am watching TV now. （暫時性）我現在在看電視。 I watch TV every day. （經常性） 我每天都看電視。（二）現在進行時可表示短暫性動作，而一般現在時表示長久性動作。Lucy is living in Beijing.（短時間居?。┞段鲿簳r住在北京。Lucy lives in Beijing. （長久性居住） 露西在北京居住或生活。（三）現在進行時表示的動作可帶有感情色彩，而一般現在時所表述的動作通常是事實。Youre always forgetting the most important things. （責備）你總是愛忘記最重要的事情。He is always helping others. （贊揚）他一直都在幫助他人。He often helps others. （事實） 他經常幫助別人。（四）有些動詞不能用進行時，know, understand, love, like, hate, wish, want, think, hope, have, believe, agree, hear, see, notice。這些動詞通常用一般現在時表示說話時發(fā)生的動作。1) 表示“擁有”的動詞。如have (has) 等。例句：I have a nice bike now. (我現在有一輛漂亮的自行車。) 不能說成: I am having a nice bike now. 2) 有些表示感覺的感官動詞。如：see, find, look (看起來)，hear (聽見)等。例句：We see him. (我們看見他。) 不能說成：We are seeing him. 但是，有些表示感覺的動詞，如：listen to, look at 等可用現在進行時。如：They are listening to the teacher. (他們在聽老師講課。) 3) 表示“喜歡”“厭惡”的動詞。如：like, love, hate (討厭)等。例句：We love our country. (我們熱愛祖國。) 不可說: We are loving our country. 4) 表示知識或腦力的動詞。如：think, know, forget等。例句：I think you are right. (我認為你是對的。) 不能說成：I am thinking you are right. 5) 表示狀態(tài)的be動詞“是”。例句：She is at home. (她在家。) 不能說成：She is being at home. 6) 表示“希望”、“愿望”、“心愿”等的動詞。如：want 等詞。例句：I want to see her now. (我現在就想見到她。) 不能說成：I am wanting to see her now.【典型例題】一、寫出下列動詞的現在分詞形式work_ sing_ play_ study_have _ dance _ write_ take_run_ sit_ shop_swim_ lie_ die begin get 二、用括號內所給單詞的適當形式填空。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.三、單項選擇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 have11. Tom _ an English class now. A. is having B. has C. having D. have12. Are you playing basketball? No, we _. A. isnt B. arent C. not D. dont四、按要求改寫句子1. The boy is playing basketball.否定句：_一般疑問句：_肯定回答：_否定回答：_對“The boy”提問：_2.連詞成句1) read .a new book. _2) clean the blackboard._3) she, the window, open, now.(用現在進行時連詞成句.)_4) The birds are singing in the tree.(就劃線部分提問)_5) is,who,the window, cleaning?(連詞成句)_6) The children are playing games near the house.(就劃線部分提問)_7) She is closing the door now.(改成否定句)_8) You are doing your homework.(用I作主語改寫句子)_9) they, the tree, sing, now, under.(用現在進行時連詞成句.)_10) The Young Pioneers are helping the old woman.(改成一般疑句)_11) Look!Lilyisdancing.（改為一般疑問句）_12) Kateislookingforherwatch.（改為否定句）_13) MrsWhiteiswatchingTV.（劃線部分提問）_14) Iamdoinghomework.（改為否定句）_15) Theyarewaitingfory