小学四年级现在进行时

现在进行时预习资料一、现在进行时的定义，构成，标志性词语定义：表示现在或现阶段正在进行或发生的动作或存在的状态。中文翻译：正在（做什么）构成：由be(am/is/are)+动词-ing形式构成 标志性词语：1.现在进行时.通常用“now”。 2.现在进行时.通常用“look”。3.现在进行时.通常用“listen”。二、动词现在分词的构成规则1 一般情况下直接加ing think-thinkingsleep-sleepingstudy-studyinglook-looking tell -telling sing-singing play-playing email-mailing go-going teach-teaching2 以不发音的字母e结尾的单词,去掉字母e，再加ing come-coming make-making have-having take-taking wake-waking 3 以重读闭音节结尾，通常呈现 “辅+元+辅”结构的动词，双写末尾的辅音字母，再加ing stop-stopping get -getting sit -sitting put-puttingrun-running shop-shopping swim-swimming3、 现在进行时的句型变化1、肯定式结构：主语+be+动词-ing形式+其他.例如：We are running now. （我们正在跑步.）2、否定式结构：主语+be+not+动词-ing形式+其他.例如：We arent running now.（我们不在跑步.）3、一般疑问句式结构：Be+主语+动词-ing形式+其他？例如：Are they running now？（他们正在跑步吗？）回答：肯定Yes, they are. 否定:No, they arent4.特殊疑问句式结构：疑问词+be+主语+其他？例如:What are they doing now?（他们正在做什么？）回答：They are running.（他们正在跑步）4、 Be动词的人称对应第一人称单数：I am doing第二人称单数：You are doing第三人称单数：He is doing、Lily is doing、My mum is doing.所有的复数人称：We are doing、They are doing、The policeman are doing5、 朗读例句1. Iamdoingmyhomeworknow.2. I am emailing my friends.3. I am running in the park.4. I am singing in the music room.5. You are doing housework.6. You are watching TV.7. You are having an English lesson.8. You are having a picnic.9. Look!Mymotherisrunning.10. Heissleeping.11. Listen! The girl is singing with the bird.12. Now Jiamin is reading an interesting book.13. Listen!Theyarereading.14. Look! The children are painting.15. They are cooking meals.16. The teachers are having lunch.17. Are you doing housework?18. Are you watching TV?19. Is your mum running?20. Is he sleeping?21. Are they cooking?22. Are the teachers having dinner?23. What are they doing?24. What is he doing? 6、 试一试1. Look!Mary_singing there.2. I _ taking photos in the garden.3. _you reading a book?4. The boy _ playing football with his friends.5. My sister _ playing computer games.6. The children _ having an art lesson.7. The girl _ swimming.8. I _ washing hands9. What _ you doing？10. The policewoman_ wearing uniforms.（现在进行时）巩固练习一. 写出下列动词的现在分词形式 work_ sing_ play_ study_ have _dance _ write_ take_run_sit_ shop_swim_ 二.按要求改写句子 1. The boy is playing basketball. 否定句：_一般疑问句：_肯定回答：_否定回答：_对“is playing basketball”提问：_对“The boy”提问：_2. They are singing in the classroom.否定句：_一般疑问句：_肯定回答：_否定回答：_对“are singing”提问：_对“in the classroom”提问：_三. 用现在进行时完成下列句子1. What _ you _ (do)?2. I _ (sing) an English song.3. What _ he _ (mend)?4. He _ (mend) a car.5. _ you _ (fly) a kite? Yes, _.6. _ she _ (sit) in the boat?7. _ you _ (ask) questions?8. We _ (play) games now.9. What are you _(do) now? I _(eat) bread.10. Its nine oclock. My father_(work) in the office.11. Look, the boy_(put) the rubbish into the bin.12. _he_(clean) the classroom? No, he isnt. He_(play).13. Where is Max? He_(run) on the grass.14. Listen, who_(sing) in the music room? Oh, Mary_(sing) there.四。选择题 1. Who _ over there now? A. singing B. are sing C. is singing D. sing2. Its eight oclock. The students _ an English class.A. have B. having C. is having D. are having3. Listen! The baby _ in the next room.A. crying B. cried C. is crying D. cries4. Look! The twins _ new sweaters. A. are wearing B. wearing C. are wear D. is wearing5. Dont talk here. Grandparents _.A. is sleeping B. are sleeping C. sleeping D. sleep6. Tom is a worker. He _ in a factory. His sisters _ in a hospital.A. work/ work B. works/ work C. work/ works7. Who _ English best in your class? A. speak B. speaks C. speaking8. Mrs. Read _ the windows every day. A. is cleaning B. clean C. cleans9. We _ music and often _ to music.A. like/ listen B. likes/ listens C. like/ are listening10. She _ up at six in the morning. A. get B. gets C. getting11. On Sundays he sometimes _ his clothes and som