中小学教育资源及组卷应用平台 Unit 4 Save the trees 现在进行时 1. 概念：表示现在或现阶段正在进行或发生的动作或存在的状态。 2. 标志词：now, look, listen, at present, at the moment, Look, There is a bird singing in the tree 3. 结构：be (am / are / is) +动词ing 4. 现在分词变化规则： 规则 动词原形 ing形式 一般情况下，直接在动词原形末尾加ing goask goingasking 以不发音字母e结尾的动词，先去e，再加ing makewrite makingwriting 以重读闭音节结尾的动词，双写最后一个字母，再加ing runbegin runningbeginning 少数几个以ie结尾的动词，改ie为y，再加ing dielie dyinglying 5. 现在进行时的句型: （1）肯定句型：主语+be(am, is, are)+现在分词+其他。 eg. I am watching TV now. 我现在正在看电视。 The children are playing football on the playground. 孩子们正在操场里踢足球。 （2）否定句型：主语+be(am, is, are)+not +现在分词+其他。 eg. I am not watching TV now. 我现在没有在看电视。 The children aren’t playing football on the playground. 孩子们没有在操场里踢足球。 （3）疑问句型: Be(Am, Is, Are)+主语+现在分词+其他。 eg. Are you watching TV now 你现在在看电视吗？ Are the children playing football on the playground 孩子们正在操场里踢足球吗？ （4）特殊疑问句：特殊疑问词+be(am, is, are)+主语+现在分词+其他。 eg. What are you doing now 你现在做什么？ Where are the children playing football 孩子们在哪里踢足球啊？ 6. 现在进行时的基本用法： 表示此时此刻进行或发生的动作，常与now, look, listen等时间状语连用。 eg. —What are you doing now 你在干什么啊？ —I am cooking dinner for my family. 我在为我的家人做晚饭。 Look! The old man is telling stories to the children. 看！这个老人在给孩子们讲故事。 二、考点过关 1.Who _____ over there now A. singing B. are sing C. is singing D. sing 2. It’s eight o’clock. The students _____ an English class. A. have B. having C. is having D. are having 3. Listen! The baby _____ in the next room. A. crying B. cried C. is crying D. cries 4. Look! The twins _____ new sweaters. A. are wearing B. wearing C. are wear D. is wearing 5. Don’t talk here. My parents _____. A. is working B. are working C. works D. work 6.Be quiet, the children_____. A. is sleeping B. sleeps C. are sleeping D. go to bed 7. Who _____ an English class in your class now A. is have B. is having C. haves D. has 8. Mrs. Read _____ the windows now. A. is cleaning B. clean C. clean to D. cleans 9.Jack and Kitty_____ in the lake. Let's join them, shall we A. swim B. have swum C. swam D. are swimming 10. It's six in the afternoon. The Greens_____ lunch together. A. has B. are having C. have had D. had had 11. — What are you doing Simon — I have finished my homework, and now I _____ the computer games. A .played B. was playing C. am playing D. play 12. Listen! They _____ about Harry Potter. Let’s join them. A. are talking B. talk C. have talked D. Talked 13. Don't go out! It _____ outside. A. rains B. rained C. is raining D. to rain 14. The boy _____ for the exams at home all this afternoon. A. study B. studies C. is studying D. studied 15. — Where is Tom We’re all waiting for him ... ...
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