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语法
一. 定义：
现在进行时
（1）表示说话时正在进行或发生的动作，这时可以不用时间状语，也可以和now,, at
the moment等时间状语连用。有时用一个动词，如look（看），listen（听）。 eg: What are you reading now? Listen! Someone is singing in the classroom.
二．标志词：通常在句子中有以下的词：now, look, listen.
1 Look！ That dog is chasing the ball! 2 He is listening to the radio now. 3. Listen! She is singing .
三. 现在进行时的结构：主语+ be（am, is,are ）+谓语动词 ing+其他 四， 成份分析
主语：人名或代词 Mingming I We Linda and Kevin Be动词 : am is are 具体用什么be动词取决于主语 -- Mingming is （单数用is ） Linda and Kevin are （复数要用are )
I am He is She is It is We are You are They are 谓语动词+ing 成为现在分词 其变化规则如下： 现在进行时的动词变化：
（1）一般在动词原形末尾加-ing。
stay－staying do－doing listen－listening suffer－suffering
（2） 哑e 结尾的动词，先去掉e，再加-ing。如：
make－making take－taking give－giving ride－riding
（3）以一个辅音字母结尾的重读闭音节词，先双写这个辅音字母，再加-ing。如： put－putting sit－sitting run－running win－winning begin－beginning
五．现在进行时的四种句式 （1）肯定句：be + doing
如： 1. I am listening to the music now. 2. The students are drawing pictures now.
（2）否定句：在be（am, is, are）后加not “be not + doing”
如：1.I am not listening to the music now. 2.The students are not drawing pictures now.
（3）疑问句：Be + 主语 + doing？
如：1. Is Amy singing? Yes,she is.\\ No, she isn’t. 2. Are they swimming ? （4）特殊疑问句：特殊疑问词+一般疑问句
1.They are drawing pictures now.(对划线提问) --What are they doing ? 2 She is singing in the classroom. --Where is she singing ?
现在进行时的练习：
1．Mr Zheng (read) a book now. 2. The rabbits (jump) now. 3.. Look ! Tom and John (swim). 4. My brother (make) a kite in his room now. 5. Look! The bus (stop). 6. We (have) an English class now. 7. Listen! Someone is (come). 8. They (catch) butterflies now. 9. He (do) an experiment now. 10. They (collect) stamps now.
11. Look! He (dive) now. 12. Tom ( watch ) TV in the dining room. 13. The doctors (get ) off the bus. 14. Come on., they ( leave ) now. 15. It (eat) fish now. 16. My father (work) in the office now.
17. Where is your mother? She (answer) the phone. 18. The teachers (run) now 19. Tom and his father ______（swim）now.
20. Look! They ______（run）along the street.
21. We ______（practice）hard these days because we will have a big match next month.
22. A: _______ you ______（studying）English? B: Yes, I am. 23. Let’s go out. It ______（not rain）now.