1、現(xiàn)在進(jìn)行時的結(jié)構(gòu)一、概念現(xiàn)在進(jìn)行時表示說話時正在進(jìn)行或發(fā)生的動作，也可表示當(dāng)前一段時間內(nèi)的活動 或現(xiàn)階段正在進(jìn)行的動作.結(jié)構(gòu)：助動詞be ( am / is / are ) +現(xiàn)在分詞.二、現(xiàn)在分詞的構(gòu)成：大多數(shù)動詞后可在動詞后直接加-ing.Eg: carry-carryi ng,catch-catchi ng,dri nk-dri nki ng, enjo y-enj oying hurry-hurry ing ,do-doing , read-readi ng , thi nk-thi nki ng如果動詞以-e結(jié)尾，則去掉-e,再力卩-ing,女口 come-coming , have

2、-having , make- making,ride-riding,write-writing,take-taking,use-using .如果動詞只有一個元音字母，而其后跟有一個輔音字母時，將此輔音字母雙寫，再加-i ng 如: hit-hitti ng,let-lett ing, put-putt in g,r un-runnin g,sit-sitt ing .如果動詞有兩個音節(jié)，且重音在第二個音節(jié)上，則末尾的輔音字母雙寫，加-ing, 如:forget-forgetti ng,prefer-preferri ng,travel-travelli ng swim-swimmi ng以

3、-ic結(jié)尾的動詞，應(yīng)先把 -ic 變?yōu)?ick,再力卩-ing,eg: panic/panicking但 lie/lying ,die/dying ,tie/tying 是特殊變化要記住.三、句型結(jié)構(gòu)：1現(xiàn)在進(jìn)行時的肯定形式、否定形式、疑問形式及其回答，所有變化都體現(xiàn)在助動詞 be ( is / am / are )上.現(xiàn)在進(jìn)行時的肯定形式：主語 +be(am/ is/are)+doi ng+其他成分 I am singing . They are writi ng .現(xiàn)在進(jìn)行時的否定形式：主語+be(am/ is/are)+not +doing其他 I am not singing . Th

4、ey aren wtiting . 般疑問句及回答：be(am/ is/are)+主語+do ing+其他成分 Am I singing ? Yes ,you are . / No ,youaren . tAre they writing ? Yes ,they are . / No ,theyaren . t特殊疑問句及回答：特殊疑問詞+be(am/ is/are)+主語+doing+其他成分What are you doing ? We are playing要求就提問內(nèi)容具體回答).縮寫形式如下：I am-1 nYou are-You rede is-He She is- hes It

5、is-It We are- We reThey are-They re四用法：表示現(xiàn)在(指說話人說話時)正在發(fā)生的事情往往與now,at the momentjust等副詞連用，以示強調(diào).We are waiting for you. What are you doing? Someone knocking at the door.正在進(jìn)行著的動作可視為未完成的動作：He talking to his friends in the classroom.可用 still 一詞強調(diào)動作的持續(xù)性He still talking to his friends in the classroom.表示一段

6、時間內(nèi)重復(fù)性的動作，說話時動作未必正在進(jìn)行. Mr. Black is writi ng ano ther article. 現(xiàn)在進(jìn)行時可用來表示不會長期發(fā)生的動作或情況，或被認(rèn)為在短期內(nèi)正在進(jìn)行的動作或存在的狀態(tài) Whatsour brother doing these days?Hestudying English at Oxford University.現(xiàn)在進(jìn)行時也可以用來表示當(dāng)前的動向：People are beco ming more and more beautiful these days.表示漸變的動詞有：become,tur n, get,grow,r un, go,beg

7、 in等. The leaves are turning brown. It getting colder and colder.與always,constantly,forever等詞連用，表示反復(fù)發(fā)生的動作或持續(xù)存在的狀態(tài)往往帶有說話人的主觀色彩.You are always cha nging your mind.一 用現(xiàn)在進(jìn)行時完成下列句子：you(fly) a kite? Yes,.you(sit) in the boat?he(talk) with me?We(play) football now.Whatyou(do)?I(sing) an En glish song.Whath

8、e(men d)?He(mend) a car.These boys(play) tennis on the playgro und.My mother(cook) in the kitche n.We can help you,because we(have )classes.the boy(write) his homework?Look! These butterflies(fly) in the sky.Liste n! The girl(sing) in the n ext room.The n aughty boy(swim) in the river.二.選擇Look. Lucy

9、 isa new bike today.A. jumpi ng B. running C. ridi ng D take ingThe childrenfootball.A. is playing B. are playing C. play the D. play aTheyTV in the eve ning. They do their homework.A. are watching B. can watching C. don watch D. don watchingListe n! Shein the classroom.A. is singing B. si ng C .to

10、si ng D. is singare you eating? nmatingmeat.A. What,some B. Which,a ny C. Where, not D. What,aIs shesomething? A. eat B. eating C. eatting D. eats7 I can catch up with the fashi on because the clothes styleall the time.A. has cha nged B. is cha nged C. is cha nging D. cha ngedIt six in the after noon. The Greenslunch together.A. has B. are hav ing C. have had D. had hadDon make any noise while the studentsto the