现在进行时定义定义：现在进行时表示现在正在发生的动 作或存在的状态。结构：1. 肯定句：主语+be ( is am are) +现在分词+其它。如：We are having an English class now.2. 否定句：主语+be (is am are ) +not+现在分词+其它。如：We are not having an English class now.3. 一般疑问句：Be (is am are ) + 主语+现在分词+其它 +？ 回答： Yes, 主语+be (is am are ) . No , 主语+be (is am are ) +not。如：Are you having an English class now? Yes, we are . No, we arent4、 时间状语：now. look! Listen! 如：1. Listen! Lily is dancing in the next room. 2. Look! The dog is running after the car 动词变现在分词的规则：1. 一般情况下直接在词后加- ing . 如：go-going ask-asking study-studyingdo-doing drink-drinking fly-flying2. 以不发音的“e”结尾的，去“e”加- ing . 如：ride-riding make-making have-havinggive-giving come-coming live-living leave-leaving write-writing注：see-seeing ( ee 是组合不去e)3. 以重读闭音节结尾的，双写后一个辅音字母再加-ing. 如：put-putting sit-sitting stop-stopping shop-shopping get-getting swim-swimming let-letting cut-cutting run-running begin-beginning hit-hitting dig-digging win-winning4. 注：特殊词 lie-lying tie-tying die-dying题例1用括号中动词的适当形式填空。3. Look! The dog _ (run) after the car 4. Listen! Lily _ (sing) in the next room. 5. What _ you _ (do ) now ? Im writing a letter. 6. Where is Kate ? She _(climb) the hill over there . 7. Its six oclock in the morning .The Blacks _ (have) breakfast. . 8. Miss Guo _(teach) us Chinese this term. She _ (be) a very good teacher . She often _(talk) with us after class. Many of us like _(talk) with her. Now, she _(talk) with Lily. 9. Listen! Who _ (read) English ? Han Meimei is. She often_ (read) English in the morning. 8. Where _ their father _( work) ? He _ (work) on a farm. But now he _(not work) .He _ (stay ) at home. 10. What time _the shop _ (close)? It _ (close) at nine oclock in the evening .But be quick ,it _ ( be ,close) now. He _(go) to school by bus every day. 11. Tom can not walk fast because he _ (carry) a heave box . 12. Do you think the teacher _(have ) meeting now?13. Why is the girl _ (stand) at the door ? _ (ask) her to come in . Its late spring. The weather _ (get ) warmer and warmer .题例2把下列句子变成现在进行时的句子1. He throws a frisby every afternoon . He _ _ a frisby now. 2. My parents often make cakes for me . My parents _ _ cakes for me now . 3. They must clean the bed room once a week. Look! They _ _ the bedroom. 5.The monkey jumps up and down. The monkey _ _ up and down.