英語現在進行時 課件
一、概念
現在進行時表示說話時正在進行或發生的動作,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．
結構：助動詞 be ( am / is / are ) +現在分詞.
二、 現在分詞的構成：
1.大多數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-thinking
2. 如果動詞以-e結尾,則去掉-e,再加-ing,
如come-coming , have-having , make-making,ride-riding,write-writing,take-taking,use-using．
3. 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-sitting．
4. 如果動詞有兩個音節,且重音在第二個音節上,則末尾的輔音字母須雙寫,再加-ing,
如: for’get-forgetting,pre’fer-preferring,up’set-upsetting．試比較 ’benefit/benfiting, ’differ/differing,’profit/profiting,這些詞的重音在第一個音節上,因此其末尾的輔音字母不雙寫．
5. 以 -ic 結尾的動詞,應先把 -ic 變為 -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、句型結構：
1.現在進行時的肯定形式、否定形式、疑問形式及其回答,所有變化都體現在助動詞 be ( is / am / are ) 上．
1)現在進行時的肯定形式：主語+be(am/ is/are)+doing+其他成分
I am singing . They are writing .
2)現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 aren’t writing .
3）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 aren’t .
Are they writing ? Yes ,they are . / No ,they aren’t .
4)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 (要求就提問內容具體回答).
2. 縮寫形式如下:
I am---I’m You are---You’re He is---He’s She is---She’s
It is---It’s We are---We’re They are---They’re
3.說明: 不是所有動詞都能用現在進行時態的,如：
see、like、want、know 等動詞往往都不用進行時態．
四．用法：
1.表示現在( 指說話人說話時) 正在發生的事情．往往與 now,at the moment,just 等副詞連用,以示強調．
We are waiting for you. What are you doing? Some one’s knocking at the door．
2.正在進行著的動作可視為未完成的動作：
He’s talking to his friends in the classroom.
可用 still 一詞強調動作的持續性
He’s still talking to his friends in the classroom.
3. 表示長期的或重復性的.動作,說話時動作未必正在進行．
Mr. Black is writing another article.
Don’t take that book away. Your father’s using it.
She is learning piano under Mr. Black.
4.現在進行時可用來表示不會長期發生的動作或情況,或被認為在短期內正在進行的動作或存在的情況：
What’s your brother doing these days? He’s studying English at Oxford University.
5.現在進行時也可以用來表示當前的動向：
People are becoming more and more beautiful these days.
6. 表示漸變的動詞有：become,turn,get,grow,run,go,begin等．
The leaves are turning brown.
It’s getting colder and colder.
7.與always,constantly,forever 等詞連用,表示反復發生的動作或持續存在的狀態,往往帶有說話人的主觀色彩．
You are always changing your mind.
8. 現在進行時(以及 be going to）可以表示為將來安排好的活動和事件 We’re spending next winter in China. 用arrive,come,go,leave 等動詞的現在進行時描寫行 程安排,也通常有“將到達”和“將離去”的意思： He’s arriving tomorrow morning.
9.當現在進行時表示某事發生的次數過多時,則有時含有抱怨,討厭,贊揚等的意思：
He is always singing at night,and we can’t fall asleep late at night.
練習
一.用現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_________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 can’t help you,because we ____________ (have )classes.
12. ________ the boy ___________ (write) his homework?
13. Look! These butterflies _________ (fly) in the sky.
14. Listen! 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 takeing
2. The children _____ football.
A. is playing B. are playing C. play the D. play a
3. They ______TV in the evening. They do their homework.
A. are watching B. can’t watching C. don’t watch D. don’t watching
4. Listen! She____ in the classroom.
A. is singing B. sing C .to sing D. is sing
5. ______are you eating? I’m eating ______ meat.
A. What,some B. Which,any C. Where,not D. What,a
6. Is she ____ something?
A. eat B. eating C. eatting D. eats
7.My dictionary ___,I have looked for it everywhere but still___ it.
A. has lost,don’t find B. is missing,don’t find C. has lost,haven’t found D. is missing,haven’t 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 changed D. will change
9. The building_______ ,I can’t stand the noise.
A. was being built B. is built C. is being built D. builds
10. I can’t catch up with the fashion,because the clothes style_______ all the time.
A. has changed B. is changed C. is changing D. changed
11. It’s six in the afternoon. The Greens_______ lunch together.
A. has B. are having C. have had D. had had
12. Don’t make any noise while the students_______ to the class.
A. are listening B. listened C. have listened D. had listened
13. Jack and Ketty_______ in the lake. Let’s join them,shall we?
A. swim B. have swum C. swam D. are swimming
14. Look! The children_______ basketball on the playground.
A. plays B. played C. is playing D. are playing
15. The kite_______ high in the sky now. It looks like a big bird.
A. has flown B. is flying C. was flying D. flew
16.As we all know,the population in the world _______ faster and faster.
A. is grown B. is growing C. are grown D. are growing
17. To my surprise,he_______ in class.
A. is always speaking B. would always speak C. has always been speaking D. does speak always
18. I want to know when he _______ for New York tomorrow.
A. has left B. is leaving C. had left D. has been leaving
19. He_______ of how he can do more for the people.
A. had always thought B. is always thinking C.has always been thought D. thinking always
20. Forests _______ and burned at such a speed that they will disappear from the earth in the future.
A.cut B. are cut C. are being cut D. had been cut
1. Are ,flying,I am 2. Are sitting, 3.Is,talking 4. are plying 5. are,doing 6.am singing 7. is,mending 8. is mending 9.are plying 10.is cooking 11. are having 12. Is ,writing 13. are flying 14.is singing, 15. is swimming
1.C 2.B 3.C 4.A 5.A 6.B 7.D 8.A 9C 10.C 11.B 12.A 13.D 14.D 15.B 16.B 17.A 18.B 19.B 20.C
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