三、现在进行时的结构
构成:主语+be+动词ing形式 第一人称+am+v-ing 第二人称+are+v-ing 第三人称+is+v-ing
现在进行时的基本用法：
a. 表示现在( 指说话人说话时) 正在发生的事情。 We are waiting for you.
b. 习惯进行：表示长期的或重复性的动作，说话时动作未必正在进行。 Mr. Green is writing another novel. (说话时并未在写，只处于写作的状态。) She is learning piano under Mr. Smith. No. 1】现在进行时的构成
现在进行时由\构成。be应为助动词，初学者最容易漏掉，它应与主语的人称和数保持一致。
【No. 2】现在进行时的应用
在实际运用时，现在进行时常用以下几种情况：
(1)当句子中有now时，常表示动作正在进行，这时要用现在进行时。如：
They are playing basketball now.现在他们正在打篮球。
(2)以look, listen开头的句子，提示我们动作正进行，这时要用现在
进行时。如：
Listen！She is singing an English song.听，她正在唱英语歌。
(3)表示当前一段时间或现阶段正在进行的动作，且此时有this week, these days等时间状语，这时常用现在进行时。如：
We are making model planes these days.这些天我们在做飞机模型。
(4)描述图片中的人物的动作，也为了表达更生动。此时也常用现在进行时。如：
Look at the picture. The children are flying kites in the park.看这幅图，那些孩
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子正在公园放风筝。 【No. 3】现在进行时的变化
肯定句式：主语+be( am, is, are)+现在分词+其它. 否定句式：主语+be(am, is, are) +not +现在分词+其它. 一般疑问句：Be(am, is, are) +主语+现在分词+其它？ 特殊疑问句：疑问词+be(am, is, are)+主语+现在分词+其它？
对现在进行时的特殊疑问句的回答，它不可以用Yes或No直接作答，要根据实际情况回答。
c. 表示渐变的动词有：get, grow, become, turn, run, go, begin等。 The leaves are turning red. It's getting warmer and warmer.
d. 与always, constantly, forever 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 changing your mind. 典型例题
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.
答案D. 前句是一个仍在持续的状态，应用进行时，由于没有找到，其影响仍然存在，应用完成时，瞬间动词用于否定式时可用于完成时。 e:现在进行时有时可以用来表示赞叹或厌烦的感情.例如: He is always causing trouble. 他总是惹麻烦.
The Present Continuous Tense 现在进行时
现在进行时最容易出现错误的地方在动词的现在分词形式，我们在复习的时候要特别注意不规则动词的变化形式。 例如：
swimming，beginning，putting，taking，buying,taking是take的ing形式,以e结尾要去e加ing.
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现在进行时态练习题
写出下列动词的现在分词形式。
help_______ come_______ swim_______ eat _______
give_______ find _______ sit _______ write_______ tie_______ make _______ play_______ clean _______ catch_______ walk_______ ride _______ run_______ draw_______ listen_______ begin _______ dance_______ watch_______ sleep_______ see_______ have _______ 二．用所给词的适当形式填空。
1.Look ! The boy ______ (read) books.
2.The girls ______ (have) breakfast now. 3. — he ______ (clean) the blackboard? — No, he isn’t.
4.Tom ______ (play) football on the playground at the moment . 5.Listen! They ______ (sing) in the muisc room. 三．汉译英。
1.我们正在看电视。We __________________ TV. 2.Tom 在图书馆看书。
Tom __________________ books in the library. 3.康康在操场上打篮球。
Kangkang is playing basketball __________________ . 4.他此刻正在睡觉。He is sleeping ____________ .
5.玛利亚在做什么？What ______ Maria ____________ now? 6.你在做作业吗？ ______ you ____________ your homework ? 四．句型转换。
1.I am running on the playground .(变否定句)
I ________________________ on the playground .
2.She is dancing in the gym.(变一般疑问句，并做肯定回答)
________________________dancing in the gym ？Yes, ______ . 3.They are sleeping at the moment.(划线部分提问) ____________ they ____________ at the moment ? 五．将下列句子改成现在进行时
1. I watch TV every day. I _________________TV now.
2. She works in a hospital. She _________________ in hospital. 3. Do you read this book? ____ you ________ this book. 4.Tom and Sam have lunch at about twelve.
Kitty and Ben ______________ lunch at about twelve. 5. They clean the room in the evening. They ______________the room now.
六．完成下列现在进行时的句子：
1. The students _____ ______ (listen) to the teacher now. 2. Li Lei______ ________ (watch) TV now.
3. She____ _______ (look) at a nice picture now.
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4. Look! The boys______ ________ (play) basketball. 5. Listen! They____ _________ (sing) a song. 6. A cat _____ ________ (run) up the tree now. 7. I ____ ________ (get) up now.
8. Her mother_____ _________ (wash) the dishes now. 9. He ______ _______ (go) to the park now. 10. They _____ ______ (sit) in the park.
11. My mother ________ ______ (clean) the room now. 12. She ______ ______(drink) some milk.
13. A cat_______ _______(sleep) behind the door. 14. Billy and Bob_______ ________(play) football. 15. They_____ _______ (have) fun together. 七、选择填空。
( ) 1.What are you doing? I’m_____ an interesting book. A. looking B. seeing C. reading
( ) 2. What ___ your sister doing? She _____ cleaning the floor. A. are, is B does, is C. is, is ( ) 3. Kate is ___ her green dress now .
A. putting on B puts on C wear ( ) 4. Is she___ her homework? No, she___.
A． do, doesn’t B does, isn’t C doing, is D doing, isn’t ( ) 5. Look! The cousins _____ new sweaters.
A. are wearing B. wearing C. are wear D. is wearing ( ) 6. Don’t talk here. My father and mother _____.
A. is sleeping B. are sleeping C. sleeping D. sleep ( ) 7 Listen! The birds ___ in the tree .
A sing B singing C is singing D are singing ( ) 8. Who _____ over there now?
A. drawing B. is draw C. is drawing D. draw ( ) 9. The students _____ an English class.
A. have B. having C. is having D. are having ( ) 10. Listen! The baby _____ in the room.
A. crying B. cried C. is crying D. cries ( ) 11.I am____ to the radio.
A. am listening B. listening C. am listen ( ) 12.She _____ the piano.
A is playing B are playing C playing ( ) 13..We ____ on the chair.
A. is sitting B. are siting C. are sitting ( )14.Lily _____ on the playground.
A. am running B. running C. is running ( )15. They ____ in the pool.
A. are swimming B. are swiming C. swimming
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