1）构成
现在进行时由助动词be的人称形式加动词的现在分词构成。它的肯定式，否定式及疑问式的结构如下：
| 肯定式 | 否定式 | 疑问式 |
| I am working now. | I am not working now. | Am I working now? |
| You are working now.He (She) is working now.We (You, They) are working now. | You are not working now.He (She) is not working now.We (You, They) are not working now. | Are you working now?Is (he, she) working now?Are you (we, they) working now? |
2）用法
a．现在进行时表示说话时谓语的动作正在进行。
Who are you waiting for? 你在等谁？
He knows that we are helping him now. 他知道我们现在正在帮助他 。
b．在现阶段正在进行的动作，但不一定说话时动作正在进行。
The students are working on the farm there days. 这些天学生们正在农场劳动。
c．有些动词的进行时态还可用来表示将来时。这类动词有go, come, leave, arrive, move,die等。
He is coming soon. 他不久就要来了。
Mary is arriving here at 4 o/clock this afternoon. 玛丽今天下午四点到达这里。
练习
（一）句型转换
（一）将下列句子分别变成否定句，一般疑问句，并对划线部分提问
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、空一词
1 I’m waiting for a bus.(否定)
I ＿＿＿＿＿＿ for a bus.
2 I am taking photos.(一般疑问句)
＿＿＿＿＿＿ photos?
3 It’s cloudy today.(划线提问)
＿＿ the weather today?
4 She is cooking in the kitchen. (划线提问)
＿＿ she ＿＿in the kitchen?
5 It’s raining. (划线提问)
＿＿＿ the weather ＿＿？
二、用所给词的正确形式填空。
1 It’s ＿＿(snow)hard now.
2 I ＿＿(watch)TV while my sister is doing her homework.
3 They ＿＿(get)ready for the exam(考试)these days.
4 Look, it ＿＿(rain) heavily.
5 Listen, someone ＿＿(play) the piano next room while others ＿＿(sing).
三、单项选择
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
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