现在进行时的结构

1、、概念现在进行时表示说话时正在进行或发生的动作 ，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.结构：助动词be ( am / is / are ) 现在分词.二、现在分词的构成:1. 大多数动词后可在动词后直接加-ing.Eg: carry-carryi ng,catch-catchi ng,dn nk-dri nki ng, enjoy-enj oying hurryhurry ing ,do-do ing , read-readi ng , thin k-th inking3.如果动词只有一个元音字母，而其后跟有一个辅音字母时，将此辅音字母双 写，再力 n-ing 女口：hit-

2、hitti ng,let-lett ing, put-pu tt in g,r un-runnin g,sit-sitt ing .4.如果动词有两个音节，且重音在第二个音节上，则末尾的辅音字母双写，加-ing,女口 ： forget-forgett ing,p refer- preferri ng,travel-travelli ng swim-swimmi ng5.以-ic结尾的动词，应先把-ic变为-ick再加-ing,eg: panic/panicking 但 lie/lying ,die/dying ,tie/tying 是特殊变化要记住.三、句型结构:1.现在进行时的肯定形式、否定

3、形式、疑问形式及其回答，所有变化都体现在助动词 be ( is / am / are )上.1)现在进行时的肯定形式：主语+be(am/ is/are)+doi ng+其他成 I am singing . They are writi ng .2)现在进行时的否定形式 主语+be(am/ is/are)+not +doing+其 I am not singing . Theyaren ' writing .3) 般疑问句及回答：be(am/ is/are)+主语+doi ng+其他成 Am I singing ? Yes ,you are . / No ,yoaren ' .

4、rAre they writing ? Yes ,they are . / No ,theyaren '. t4）特殊疑问句及回答：特殊疑问词+be（am/ is/are）+主语+doing+其他成分 What are you doing ? We are playing要求就提问内容具体回答）.2.缩写形式如下：I am-I ' mou are-You' iHe is-He She is-She' ss-lt We are- We reThey are-They' re四. 用法:1.表示现在（指说话人说话时）正在发生的事情.往往 与now,at th

5、e momentjust等副词连用，以示强调.We are waiting for you. What are you doing? Someone' knocking at the door.2. 正在进行着的动作可视为未完成的动作：He talking to his friends in the classroom.可用 still 一词强调动作的持续性He still talking to his friends in the classroom.3. 表示一段时间内重复性的动作，说话时动作未必正在进 行. Mr. Black is writ ing ano ther artic

6、le.4.现在进行时可用来表示不会长期发生的动作或情况，或被认为在短期内正 在进行的动作或存在的状态 Whaf 以our brother doing these days?He' studying English at .5.现在进行时也可以用来表示当前的动向:7.与always,constantlyforever等词连用，表示反复发生的动作或持续存在的 状态，往往带有说话人的主观色彩.You are always cha nging your mind.用现在进行时完成下列句子：6 / 41.you(fly) a kite? Y es,2.you(sit) in the boat?3

7、.he(talk) with me?4. We(p lay) football now.5. Whatyou(do)?6. I(sing) an En glish song.7. Whathe(men d)?8. He(mend) a car.9. These boys(p lay) tennis on the p laygro und.10. My mother(cook) in the kitche n.(have )classes.11. We can help you,because we12.the boy(write) his homework?(fly) in the sky.1

8、3. Look! These butterflies14. Liste n! The girl(sing) in the n ext room.15. The n aughty boy(swim) in the river.二.选择1. Look. Lucy is a new bike today.A. jum ping B. running C. ridi ng D take ing2. The childre nfootball.A. is p layi ng B. are p layi ng C. p lay the D. p lay a3. TheyTV in the eve ning

9、. They do their homework.A. are watchi ng B.ca n watch ing C.d on' watch D.don' watchi ng4. Liste n! She in the classroom.A. is si ngi ng B. si ng C .to si ng D. is sing5.are you eating?l 'matingmeat.A. What,some B. Which,a ny C. Where, not D. What,a6. Is shesomethi ng? A. eat B. eat ing

10、 C. eatt ing 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 nged8. It 'S in the after noon. The Gree nslunch together.A. has B. are hav ing C. have had D. had had9. Don' make any noise while the studentsto the class.A. are list