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一.第三人稱單數(shù)形式的詞尾變化.,在一般現(xiàn)在時(shí)中, 當(dāng)主語是第三人稱單數(shù)形式時(shí),行為動(dòng)詞用第三人稱單數(shù)形式,即加-s 或 –es. 具體方法如下:,一般情況下,直接加 -s.如: work---works play---plays rain---rains see---sees,2. 以 sh,ch,s,x或o結(jié)尾的詞后加-es.如: wash---washes teach---teaches fix---fixes do---does go---goes,3.以輔音字母加-y結(jié)尾的, 先把y變成i,再加 -es.如: study---studies fly---flies carry---carries,,動(dòng)詞短語： +s: Plays, skips, sings, gives, starts, likes, buys some toys, gets up comes back home makes noodles, eats lunch drinks coffee begins his class , practises the piano +es : watches TV brushes his teeth goes to bed goes to school does my homework does some reading y→ i+ es: fly → flies study →studies 不規(guī)則變化：have-----has,思考： 什么時(shí)候用動(dòng)詞的原型？ 什么時(shí)候用動(dòng)詞的三單形式？ 觀察下列圖片，并得出結(jié)論。,,The girl eats apples.,The two boys eat apples.,,Mike plays basketball.,The boys play basketball. l,,Xiao mei goes to school.,The sisters go to school.,,,Ming ming watches TV.,Tim and his mother watch TV.,,Mary goes shopping.,Her friends go shopping.,,Jane reads books.,The students read books.,二. 哪些主語是第三人稱單數(shù),1.人稱代詞he, she, it是第三人稱單數(shù). 1).He likes watching TV. 他喜歡看電視. 2).She has lunch at twelve. 他十二點(diǎn)吃午餐. 3). It looks like a cat. 它看起來象只貓.,2. 單個(gè)人名.地名或稱呼作主語時(shí),是第三人稱單數(shù)形式.如: 1).Han Mei watches TV with her mother.韓梅和她的母親看電視. 2).Beijing is in China. 北京在中國(guó). 3). Miss Wu often makes cakes.王叔叔經(jīng)常做蛋糕.,3.單數(shù)可數(shù)名詞或 “this/that/the + 單數(shù)可數(shù)名詞” 作主語時(shí),是第三人稱單數(shù). 如: 1).This girl plays football in school. 2).This book is yours. 3).That car is red. 4).The cat is Lucy’s.,5. 不可數(shù)名詞作主語時(shí),為第三人稱單數(shù).如: 1).The milk is in the glass.牛奶在玻璃杯里. 2).The bread is very small. 那塊面包很小.,6. 當(dāng)數(shù)字或字母做主語時(shí),看做第三人稱單數(shù).如: 1).“6” is a lucky number. “6”是個(gè)吉利數(shù)字. 2).“I” is a letter. “ I”是個(gè)字母.,專項(xiàng)習(xí)題精練 (著眼高分 查漏補(bǔ)缺),用括號(hào)中所給動(dòng)詞的適當(dāng)形式填空,1. He often ________(have) dinner at home. 2. Daniel and Tommy _______(be) in Class One. 3. We _______( watch) TV on Monday. 4. Nick _______( go) to the zoo on Sunday.,5. Mike _______(like) cooking. 6. They _______(have) the same hobby. 7. My aunt _______(look) after her baby carefully. 8. You always _______(do) your homework well. 9. I _______(be) ill. I’m staying in bed. 10. She _______(go) to school from Monday to Friday.,11. Danny ____________ (study) English, Chinese, math, science and art at school. 12. Mike sometimes __________ (go) to the park with his sister. 13. My father always __________(come) back(回來) from work very late. 14. The teacher is busy. He __________ (sleep睡覺) six hours a day. 15. Joan __________(sing唱歌) in the classroom every day. She often __________ (sing) there.,一般現(xiàn)在時(shí),結(jié)構(gòu)：,主語(I, we, you, they, the girls…),主語(he, she, it, Tom, the boy…),+動(dòng)詞原形(go, play, talk…),+動(dòng)詞三單(goes, plays, talks…),定義：,表示經(jīng)常性或習(xí)慣性的動(dòng)作。,,怎么改一般疑問句： 一找be動(dòng)和情態(tài)，二找主語你、我、他， 找到了，恭喜你，把他們句首安個(gè)家， be動(dòng)、情態(tài)要在前，緊跟主語你、我、他， 注意要把some換any。 找不到be動(dòng)和情態(tài)， do會(huì)在句首笑你傻， 主語三單就打死（does）它， 別忘了還有過去式是did. 檢查完拼寫就搞定啦！！,怎么改否定句的順口溜 先找be動(dòng)和情態(tài)，再把not后面帶， 找不到也別急，實(shí)意動(dòng)詞圈出來， dont、doesnt、didint當(dāng)帽戴， 還得小心被some害， 改成any，才算完.,一般現(xiàn)在時(shí),結(jié)構(gòu)：,肯定句： （復(fù)數(shù)）主語+ 動(dòng)詞原形+其他,一般疑問句：Do +（復(fù)數(shù)）主語 + 動(dòng)詞原形+其他？,否定句：（復(fù)數(shù)）主語+ don’t +動(dòng)詞原形+其他,肯/否回答： Yes, 主語+ do . No, 主語 +don’t.,特殊疑問句：特殊疑問詞+ do/does + 主語 + 動(dòng)詞原形,結(jié)構(gòu)： 肯定句： （單數(shù)）主語+ 動(dòng)詞三單+其他 否定句：（單數(shù)）主語+ doesn’t +動(dòng)詞原形+其他 一般疑問句：Does + 主語 + 動(dòng)詞原形+其他？ 肯/否回答： Yes, 主語 + does. No, 主語 +doesn’t.,I speak English. 2.We like Math. 3.They go swimming on Sundays.,將下列句子改成否定句，一般疑問句并回答：,I don’t speak English.,Do you speak English? Yes, I do/ No ,I don’t.,We don’ t like Moths.,Do you like moths? Yes, we do/ No, we don’t.,They don’t go swimming on Sundays.,Do they go swimming on Sundays? Yes ,they do. / No , they don’t.,一般疑問句，肯定回答，否定回答.,Simon and Daniel like going skating. My parents watch TV every day. Sun Yang and Sun Fang usually wash clothes on Saturdays. Her classmates play football in school.,一般疑問句，肯定回答，否定回答.,She likes milk. He speaks English very well. John comes from Canada. Amy likes playing computer games.,Gao Shans sister likes playing table tennis. My dog runs fast. Mingming usually waters the flowers every day. Tom does his homework at home.,Let’s correct: I goes to school at six every day. He don’t like playing football. 3. They likes playing games. 4. Daming watchs TV in the evening. 5. Does he usually has a party? 6. What do they on Sunday? 7. Tony goes always to school at eight o’clock. 8. What they eat in the party? 9. Lily haves lunch at school. 10. What do his parents usually gives him ?,___,____,___,____,___,_,_________,_,____,____,1. I want to buy a big green bag . (變特殊疑問句) ______ ____ you want to buy？,2. Mary does not have any books . (變肯定句) Mary _____ ______ books .,3. She likes the black bag. (變?yōu)榉穸ň?,She doesn’t like the black bag.,What do,has some,4. I buy the pants for only 50 Yuan. (用she改寫句子) ______ ______ the pants for only 50 Yuan.,She buys,5. He often has hamburgers and apples for dinner . (變?yōu)橐话阋蓡柧?,He doesn’t often have hamburgers and apples for dinner.,