初中一般现在时和现在进行时讲解、练习及答案.doc

一般现在时和现在进行时一般现在时用法：1. 现阶段经常性习惯性动作或存在的状态I leave home for school at 7 every morning.2. 客观真理, 客观存在，科学事实The earth moves around the sun.Shanghai lies in the east of China.3在格言或警句中Pride goes before a fall.骄者必败。常用时间状语：sometimes, often, every day, usually, always 等构成：1.动词用原形I like it.2.当主语是第三人称单数时，动词要加-s(-es)She likes it.3.be 动词用am，is, are I am a teacher. He is a boy. They are girls.否定形式：1.dont+动词原形I dont like it.They dont like it.2.当主语是第三人称单数时，则为doesnt+动词原形 He doesnt like it.一般疑问句：把do 或does 放在主语的前面，后面动词用原形Do you like it? Does Ann like it?l 注意：动词三单的变化规则【巩固练习】写出下列动词的第三人称单数 drink _ stay _ look _ have_ do_pass_ carry _ come_ watch_ brush_1. Mrs. Smith _ the windows every day. A. is cleaning B. clean C. cleans2. On Sunday he sometimes _ his clothes and sometimes _ some shopping.A. wash/ do B. is washing/ is doing C. washes/ does3. She _ up at six in the morning. A. get B. gets C. getting现在进行时1. 定义：表示正在发生或进行的动作结 构：be(am,is,are)+动词现在分词形式（简写：be+动词-ing）A、陈述句(肯定句)主语be(am,is,are)+现在分词，如：IamreadingEnglish.我正在读英语。Heiswriting.他正在写字。B、一般疑问句Be(Am,Is,Are)+主语现在分词，如：Areyousinging?你正在唱歌吗？C、特殊疑问句疑问词be(am,is,are)主语现在分词Whatareyoudoing?你正在干什么?Iamdoingmyhomework.我正在做作业。2. 标志词：(1) 时间状语now、atthemoment(2) 句前有提示词look、listen、lookat 如：1. I am listening to the music now. 2. The students are drawing pictures now. 3. Listen! She is singing. 4. Look! Mr. Li is riding a bike.3.动词-ing的构成规则（1）一般情况下，直接加ing，如：cook-cooking, go-going, wash-washing, flyflying（2）以不发音的e结尾，去e加ing，如：make-making,taste-tasting（3）如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing，如：run-running,stop-stopping, swim- swimming, runrunning, getgetting（4）以ie结尾的动词，先把ie变成y再加-ing。lie-lyingtie-tying注意：see-seeingdraw-drawinglisten-listening【巩固练习】1. -WhereisMax?-He_(run)onthegrass.A. runs B. running C. is running 2. Is the man _ tea or milk? A. drinks B. drink C. drinking 3. Dont talk here. Grandparents _. A. is sleeping B. are sleeping C. sleeping D. sleep4. Theboyisplayingbasketball.否定句：_一般疑问句：_肯定回答：_否定回答：_对划线部分提问: _5.Theyaresingingintheclassroom.否定句：_一般疑问句：_肯定回答：_否定回答：_对划线部分提问: _【作业布置】一、选择题练习1. Who _ over there now? A. singing B. are sing C. is singing D. sing2. Its nine ten. 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. Tom is a worker. He _ in a factory. His sisters _ in a hospital.A. work/ work B. works/ work C. work/ works6. We _ music and often _ to music. A. like/ listen B. likes/ listens C. like/ are listening7. The twins usually _ milk and bread for breakfast, but Jim _ some coffee for it.A. have/ have B. have/ has C. has/ have二、用所给单词的正确形式填空：1. My father always _(come) back from work very late.2. The teacher is busy. He _ (sleep) six hours a day.3. Listen! Joan _(sing) in the classroom. She often _ _ (sing) there.4. _ your brother _(know) Japanese?5. Where _ you _ (have) lunch every day?6. The girl _ (like) wearing a skirt. Look! She _ (wear) a red skirt today.My parents _（watch）TV now. . Look. Three boys _（run）. . What _ your mother _（do）now? 10. _ your dog _ now?（sleep） 11. _ you _（listen）to music? Yes, I am. 12. Look, Miss Chen _ （play）football. 13. Tom and his sister _（wait）for you over there. 14. Now Class 3 and Class 4_（have）a test. 15. Listen, someone _（sing）in the classroom. 16. Where is Zhang Yan? She _（talk）with her teacher in the teachers office. 三、按要求进行句型转换： 1. Lily is dancing.（改为一般疑问句） _ 2. Kate is looking for her watch.（改为否定句） _ 3. Mrs. White is watching TV.（对划线部分提问） _ 4. I am doing homework.（改为否定句） _ 5. They are waiting for you at the library.（就划线部分提问） _ 四、改错： 1. People like swiming in summer.（ ） 3. Are you listen to me?（ ） 4. I not writing a letter.（ ） 4. My brother speak English.（ ） 答案：一、C D C A B A B二、1、comes 2、sleeps 3、is singing；sings4、Dose； know 5、Do； have 6、likes；is wearing7、are watching 8、are running 9、is； doing 10、 Is； sleeping11、Are； listening 12、is playing 13、are waiting 14、are having15、is si