小學階段現(xiàn)在進行時的結(jié)構(gòu)和用法

1、小學階段現(xiàn)在進行時的結(jié)構(gòu)和用法一、概念現(xiàn)在進行時表示說話時正在進行或發(fā)生的動作,也可表示當前一段時間內(nèi)的活動或現(xiàn)階段正在進行的動作結(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：1.大多數(shù)動詞后可在動詞后直接加-ing Eg: carry-carrying,catch-catching,drink-drinking, enjoy-enjoying hurry-hurrying ,do-doing , read-reading , think-thinking2. 如果動詞以-e結(jié)尾,則去掉-e,再加-ing,如come-coming , have-ha

2、ving , make-making,ride-riding,write-writing,take-taking,use-using3. 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-ing如： hit-hitting,let-letting, put-putting,run-running,sit-sitting4. 如果動詞有兩個音節(jié),且重音在第二個音節(jié)上,則末尾的輔音字母須雙寫,再加-ing,如: forget-forgetting,prefer-preferring,upset-upsetting試比較 benefit/benfiting, differ/

3、differing,profit/profiting,這些詞的重音在第一個音節(jié)上,因此其末尾的輔音字母不雙寫5. 以 -ic 結(jié)尾的動詞,應(yīng)先把 -ic 變?yōu)?-ick,再加 -ing,eg: panic/panicking,picnic/picnicking,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)在進行時的肯定形式：主語+be(am/ is/are)+doing+其他成分I am singing . They ar

4、e writing .現(xiàn)在進行時的否定形式:主語+be(am/ is/are)+not +doing+其他成分I am not singing . They arent writing .一般疑問句及回答：be(am/ is/are)+ 主語+doing+其他成分Am I singing ? Yes ,you are . / No ,you arent .Are they writing ? Yes ,they are . / No ,they arent .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 a

5、re playing (要求就提問內(nèi)容具體回答).2. 縮寫形式如下:I am-Im You are-Youre He is-Hes She is-Shes It is-Its We are-Were They are-Theyre3.說明: 不是所有動詞都能用現(xiàn)在進行時態(tài)的,如：see、like、want、know 等動詞往往都不用進行時態(tài)練習 一.用現(xiàn)在進行時完成下列句子:1. _you_(fly) a kite? Yes,_.2. _you_(sit) in the boat?3. _he_(talk) with me?4. We_(play) football now.5. What_

6、you_(do)?6. I_(sing) an English song.7. What_he_(mend)?8. He_(mend) a car.9. These boys _ (play) tennis on the playground.10. My mother_ (cook) in the kitchen.11. We cant help you,because we _ (have )classes.12. _ the boy _ (write) his homework?13. Look! These butterflies _ (fly) in the sky.14. List

7、en! The girl _ (sing) in the next room.15. The naughty boy _ (swim) in the river. 二.選擇1. Look. Lucy is_ a new bike today.A. jumping B. running C. riding D takeing2. The children _ football.A. is playing B. are playing C. play the D. play a3. They _TV in the evening. They do their homework.A. ar

8、e watching B. cant watching C. dont watch D. dont watching4. Listen! She_ in the classroom.A. is singingB. sing C .to sing D. is sing5. _are you eating? Im eating _ meat.A. What,some B. Which,any C. Where,not D. What,a6. Is she _ something?A. eat B. eating C. eatting D. eats7.My dictionary _,I have

9、looked for it everywhere but still_ it.A. has lost,dont find B. is missing,dont findC. has lost,havent found D. is missing,havent found.8.Having a computer for personal use is no easy task because technology _ so rapidly.A. is changing B. has changed C. will have changedD. will change9. The building

10、_ ,I cant stand the noise.A. was being built B. is built C. is being built D. builds10. I cant catch up with the fashion,because the clothes style_ all the time.A. has changed B. is changed C. is changing D. changed11. Its six in the afternoon. The Greens_ lunch together.A. has B. are having C. have

11、 hadD. had had12. Dont make any noise while the students_ to the class. A. are listening B. listened C. have listened D. had listened13. Jack and Ketty_ in the lake. Lets join them,shall we? A. swim B. have swum C. swamD. are swimming14. Look! The children_ basketball on the playground.A. plays B. p

12、layed C. is playing D. are playing15. The kite_ high in the sky now. It looks like a big bird.A. has flown B. is flying C. was flying D. flew16.As we all know,the population in the world _ faster and faster.A. is grown B. is growing C. are grown D. are growing17. To my surprise,he_ in class.A. is always speaking B. would always speak C. has always been speaking D. does speak always18. I want to know when he _ for New York tomorrow. A. has left B. is leaving C. had left D. has been leaving19. He_ of how he can do more for the people.A. had always thought B. is always