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小学英语现在进行时（讲解、练习） 一、概念现在进行时表示说话时正在进行或发生的动作结构：主语+ be ( am / is / are ) +现在分词.二、 现在分词的构成：1.大多数动词后可在动词后直接加- ing Eg: carry-carrying, catch-catching, drink-drinking 2. 如果动词以-e结尾,则去掉-e,再加- ing,如come-coming , have-having , make-making, ride-riding, write-writing, take-taking, use-using3. 如果动词只有一个元音字母,而其后跟有一个辅音字母时,将此辅音字母双写,再加-ing如： hit-hitting, let-letting, put-putting,run-running, sit-sitting三、句型结构：1.现在进行时的肯定形式、否定形式、疑问形式及其回答,所有变化都体现在助动词 be ( is / am / are ) 上1)现在进行时的肯定形式：主语+be(am/ is/are)+doing+其他成分I am singing . They are writing .2)现在进行时的否定形式:主语+be(am/ is/are)+not +doing+其他成分I am not singing . They arent writing .3）一般疑问句及回答：be(am/ is/are)+ 主语+doing+其他成分Am I singing ? Yes ,you are . / No ,you arent .Are they writing ? Yes ,they are . / No ,they arent .4)特殊疑问句及回答:特殊疑问词+be(am/ is/are)+主语+doing+其他成分What are you doing ? We are playing 2. 缩写形式如下:I am-Im You are-Youre He is-Hes 练习 一.用现在进行时完成下列句子:1. _you_ (fly) a kite? Yes,_.2. _you_ (sit) in the boat?3. _he_ (talk) with me?4. We_ (play) football now.5. What_you_(do)?6. I_ (sing) an English song.7.What_he_ (mend)?8. He_ (mend) a car.9. These boys _ (play) tennis on the playground.10. My mother_ (cook) in the kitchen.11. We cant help you,because we _ (have )classes.12. _ the boy _ (write) his homework?13. Look! These butterflies _ (fly) in the sky.14. Listen! The girl _ (sing) in the next room.15. The naughty boy _ (swim) in the river.二.选择1. Look. Lucy is_ a new bike today. A. jumping B. running C. riding D taking2. The children _ football.A. is playing B. are playing C. play the D. play a3. They _TV in the evening. They do their homework.A. are watching B. cant watching C. dont watch D. dont watching4. Listen! She_ in the classroom. A. is singingB. sing C .to sing D. is sing5. _are you eating? Im eating _ meat.A. What,some B. Which,any C. Where,not D. What,a6. Is she _ something?A. eat B. eating C. eatting D. eats14. Look! The children_ basketball on the playground.A. plays B. played C. is playing D. are playing
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