1）構(gòu)成

現(xiàn)在進(jìn)行時由助動詞be的人稱形式加動詞的現(xiàn)在分詞構(gòu)成。它的肯定式，否定式及疑問式的結(jié)構(gòu)如下：

2）用法

a．現(xiàn)在進(jìn)行時表示說話時謂語的動作正在進(jìn)行。

Who are you waiting for? 你在等誰？

He knows that we are helping him now. 他知道我們現(xiàn)在正在幫助他 。

b．在現(xiàn)階段正在進(jìn)行的動作，但不一定說話時動作正在進(jìn)行。

The students are working on the farm there days. 這些天學(xué)生們正在農(nóng)場勞動。

c．有些動詞的進(jìn)行時態(tài)還可用來表示將來時。這類動詞有go, come, leave, arrive, move,die等。

He is coming soon. 他不久就要來了。

Mary is arriving here at 4 o/clock this afternoon. 瑪麗今天下午四點到達(dá)這里。

練習(xí)

（一）句型轉(zhuǎn)換

（一）將下列句子分別變成否定句，一般疑問句，并對劃線部分提問

1 He’s doing homework in his room.

2 It’s running after a dog.

3 They are shopping in the supermarket.

4 I am watching TV.

（二）填空

一、空一詞

1 I’m waiting for a bus.(否定)

I ＿＿＿＿＿＿ for a bus.

2 I am taking photos.(一般疑問句)

＿＿＿＿＿＿ photos?

3 It’s cloudy today.(劃線提問)

＿＿ the weather today?

4 She is cooking in the kitchen. (劃線提問)

＿＿ she ＿＿in the kitchen?

5 It’s raining. (劃線提問)

＿＿＿ the weather ＿＿？

二、用所給詞的正確形式填空。

1 It’s ＿＿(snow)hard now.

2 I ＿＿(watch)TV while my sister is doing her homework.

3 They ＿＿(get)ready for the exam(考試)these days.

4 Look, it ＿＿(rain) heavily.

5 Listen, someone ＿＿(play) the piano next room while others ＿＿(sing).

三、單項選擇

1. Myfather often ______ TV at home after dinner.
  A. watch  B. watches  C. is watching   D. does watch
2. Where does your mother study English? She ____ in an evening school.
  A. studies  B. studying   C. study    D. is studying
3. My little brother wants _____ a soldier when he grows up.
  A. to do    B. is   C. to be    D. are
4. Look! My uncle ______ computer games over there.
 A. is   B. playing    C. plays    D. is playing
5. Some of my friends _____ in the river now.
  A. are swimming  B. swim C. is swimming  D. are swim