.现在进行时

现在进行时 定义：表示现在（说话瞬间）正在进行或发生的动作。 用于现在进行时的时间状语： now，right now，at the moment, at present 结构：be + doing (be随主语变化而变化) 肯定句                      否定句 I am working.                I am not working. You are reading.              You are not reading. He/She/It is running.          He/She/It is not running. We/You/They are eating.        We/You/They are not eating. 一般疑问句：只要把be动词提前！ 动词ing的变化规则： 1.一般情况 +ing cook-cooking, 2. 以不发音的e结尾 去e+ing take--taking 3. 以ie结尾 变ie为y，+ing lie--lying 4.以重读闭音节结尾 双写最后一个辅音字母 run--running       Exercises: 一．写出下列动词的ing形式。 play ________    make ________    die ________    shop ________ stop ________    get ________      watch ________  come ________ swim ________  walk ________    talk ________    tie ________ write ________  look ________      give ________    sit ________ begin ________  stand ________    draw ________    go ________ 二．有所给词的适当形式填空。 1. It's twelve o'clock now. The students __________ (have) their lunch now. They usually ________ (have) rice, meat and vegetables for their lunch. 2. Amy ________ (watch) TV every day. She ________ (watch) TV now. 3. I like ________ (drink) coffee. 4. Look! The boys ________ (play) basketball. 5. ________ Lily ________ (swim) now? 6. Listen! Somebody ________ (sing) in the next room. 7. Be quiet! The students __________ (have) lessons. 8. –Where is Linda?    --She is ________ (do) her homework in her room. 三．单项选择 (    ) 1. –Let’s go! --Wait a moment! I __________ my homework. A. do    B. am doing    C. is doing    D. did (    ) 2. –Keep quiet! Dad __________ in the room. --OK, mum. A. slept    B. sleeps      C. is sleeping    D. sleep (    ) 3. –Listen, who __________ outside? --Let’s go and see. A. crying    B. cry    C. cries    D. is crying (    ) 4. Listen! It’s Han Mei. She ________ English in the classroom again. A. is reading    B. read    C. reads      D. has read (    ) 5. –Look at the twins! --Oh, they __________ a model plane happily. A. make      B. is making    C. are making    D. made 四．句型转换 1. Lisa practises the piano every day. (用now改写) Lisa ________ ________ the piano ________. 2. The workers are having a rest. (改为否定句) The workers ________ ________ a rest. 3. Millie is watering the flowers. (改为一般疑问句，并作否定回答) ________ ________ ________ the flowers?  ________, ________ ________. 4. I am running. (用we作主语改写句子) ________ ________ running. 情态动词can的用法 1. 表示能力。 肯定句：I can swim.  She can dance.    They can speak English. 否定句：I can’t swim.  She can’t dance.    They can’t speak English. 一般疑问句：只要把can提前！ 2. 表示请求。 e.g. --Can I borrow your book？ --Yes，you can. Here you are.