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小学英语辅导资料【现在进行时】
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一、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．
如: drink-drinking, do-doing , read-reading , think-thinking 2.如果动词以-e结尾,则去掉-e,再加-ing。
如：come-coming ,have-having ,make-making,write-writing 3.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,再加-ing 如：hit-hitting,put-putting,run-running,swim-swimming．
4.如果动词有两个音节,且重音在第二个音节上,则末尾的辅音字母须双写,再加-ing, 如: for’get-forgetting,pre’fer-preferring,up’set-upsetting．试比较 ’benefit/benfiting, ’differ/differing,’profit/profiting,这些词的重音在第一个音节上,因此其末尾的辅音字母不双写．
三、句型结构：
1.现在进行时的肯定形式、否定形式、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)+doing+其他成分
I am singing.They are writing.2)现在进行时的否定形式:主语+be(am/ is/are)+not +doing+其他成分
I am not singing.They aren’t writing.3）一般疑问句及回答：be(am/ is/are)+ 主语+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.说明: 不是所有动词都能用现在进行时态的,如：
see、like、want、know 等动词往往都不用进行时态． 练习
一.用现在进行时完成下列句子: 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)claes.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.选择
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 claroom.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 miing,don’t find C.has lost,haven’t found D.is miing,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 cla.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 cla.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
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