1、行為動(dòng)詞（一般現(xiàn)在時(shí)）,一、什么是行為動(dòng)詞,行為動(dòng)詞指除動(dòng)詞be和have以外，一切可以單獨(dú)作謂語(yǔ)的動(dòng)詞。動(dòng)詞be和動(dòng)詞have一般表示狀態(tài)，而行為動(dòng)詞大都用來(lái)表示動(dòng)作，如work，study，swim等。,二、行為動(dòng)詞一般現(xiàn)在時(shí)的構(gòu)成,行為動(dòng)詞一般現(xiàn)在時(shí)須用動(dòng)詞原形表示，但當(dāng)主語(yǔ)是第三人稱(chēng)單數(shù)時(shí)，詞尾須加-s或-es，其構(gòu)成方法與名詞復(fù)數(shù)構(gòu)成方法相同，現(xiàn)以動(dòng)詞work為例： I You（你） He She It We You（你們） They,work.,works.,work.,三、行為動(dòng)詞一般現(xiàn)在時(shí)的基本用法,1）表示現(xiàn)在經(jīng)常發(fā)生或習(xí)慣性的動(dòng)作或狀態(tài)： I usually walk to

2、 school. They work here. My grandfather watches TV every evening. He goes to school by bus. 2）表示客觀事實(shí)或普遍真理： The sun rises in the east. The earth moves round the sun. Two plus two makes four.,3）表示主語(yǔ)的特征、性格、能力等： She sings well. John and I love sports. We work hard. They all like me. 注意：英語(yǔ)中的人稱(chēng)代詞有主格和賓格之分。

3、主格人稱(chēng)代詞在句中作主語(yǔ)；賓格人稱(chēng)代詞作動(dòng)詞或介詞賓語(yǔ)。一般現(xiàn)在時(shí)還常用在下列句子中： Here comes the bus. Here he comes. There goes the bell.,四、行為動(dòng)詞一般現(xiàn)在時(shí)第三人稱(chēng) 單數(shù)形式的構(gòu)成,行為動(dòng)詞一般現(xiàn)在時(shí)的第三人稱(chēng)單數(shù)形式的構(gòu)成 方法和名詞復(fù)數(shù)的構(gòu)成方法完全一樣。,1）一般在動(dòng)詞原形后加s：,work works run runs live lives,2）以s, x, sh, ch結(jié)尾的動(dòng)詞加es：,finish finishes teach teaches watch watches guess guesses fix fixe

4、s mix mixes,4）如詞末為o，o前為輔音字母，加 es：,go goes do does,3）以輔音字母加y結(jié)尾的動(dòng)詞變y 為i 再加es：,carry carries fly flies,但play plays的y 之前是元音字母，只加s。,五、常與一般現(xiàn)在時(shí)搭配使用的時(shí)間狀語(yǔ),1）表示時(shí)間頻度的詞語(yǔ)： always usually often sometimes hardly never,2）與every一起用的狀語(yǔ)詞組：,every,day week month spring year Monday,every other day (=every two days) every

5、 three hours once every two months,3）其他,in,the morning the afternoon the evening,twice a week,第5 講 行為動(dòng)詞,要點(diǎn)6 一般現(xiàn)在時(shí)的否定式 一般現(xiàn)在時(shí)的否定式是在動(dòng)詞原形前加助動(dòng)詞do not (dont )；主語(yǔ)是第三人稱(chēng)單數(shù)時(shí)在動(dòng)詞原形前加助動(dòng)詞does not (doesnt)，其結(jié)構(gòu)為： 1）主語(yǔ) + dont+ 動(dòng)詞原形 They dont work here. I dont go to school on Sundays. 2）主語(yǔ)(第三人稱(chēng)單數(shù))+ doesnt+ 動(dòng)詞原形 She d

6、oesnt like sports. The boy doesnt study hard.,第5 講 行為動(dòng)詞,*如句中用了never（從不），hardly（很少、幾乎不）等詞來(lái)表示否定意義，就不能再使用助動(dòng)詞dont 或doesnt , 試比較： I dont know you. I hardly know you. I dont hardly know you.,(F),第5 講 行為動(dòng)詞,一般現(xiàn)在時(shí)用never , hardly 表示否定意義時(shí)，如主語(yǔ)為第三人稱(chēng)單數(shù)，行為動(dòng)詞要加-s 或-es。試比較： He never gets up early. He hardly gets up

7、early. He doesnt get up early on Sundays. The girl hardly goes to school by bus. The girl doesnt go to school by bus. 另外，為了加強(qiáng)否定意義可在否定句中加at all, 如 I dont like the book at all.,第5 講 行為動(dòng)詞,要點(diǎn)7 行為動(dòng)詞一般現(xiàn)在時(shí)的疑問(wèn)式和回答 一般現(xiàn)在時(shí)的疑問(wèn)式在句首加助動(dòng)詞do, 主語(yǔ)為第三人稱(chēng)單數(shù)時(shí)在句首加does,其結(jié)構(gòu)是： Do + 主語(yǔ)+ 動(dòng)詞原形? They live near our school. Do they

8、 live near our school? The students like learning English. Do the students like learning English?,第5 講 行為動(dòng)詞,2)Does + 主語(yǔ)（第三人稱(chēng)單數(shù)）+ 動(dòng)詞原形? He watches TV every evening. Does he watch TV every evening? My father teaches Chinese. Does your father teach Chinese? 簡(jiǎn)略回答用助動(dòng)詞do/does 和dont/doesnt 代替行為動(dòng)詞. Do you o

9、ften go shopping with your mother? -Yes, I do. / -No, I dont. Does his mother work in that factory? -Yes, she does. / -No, she doesnt.(回答時(shí)須用人稱(chēng)代詞),第5 講 行為動(dòng)詞,要點(diǎn)8 用作助動(dòng)詞的do與用作行為動(dòng)詞的do 在英語(yǔ)中，do既是一個(gè)助動(dòng)詞，又是一個(gè)行為動(dòng)詞。 1)do 用作行為動(dòng)詞一般表示“做”、“干”等意思， We do morning exercises every day. Jack often does some washing on Su

10、ndays. She never does her homework in the evening. 2)do用作助動(dòng)詞主要用來(lái)幫助構(gòu)成疑問(wèn)句、否定句或用于替代等。 Do you drive to work every day ?(幫助構(gòu)成疑問(wèn)句) He doesnt work on Sundays.(幫助構(gòu)成否定句) Does he like the job? Yes, he does.(用于替代),第5 講 行為動(dòng)詞,*區(qū)別do在以下句子中的不同功能 Do you do your lessons every day? The students dont do their homework

11、on Saturdays.,寫(xiě)出下列動(dòng)詞在句中的適當(dāng)形式：,1）We _ (love) sports. 2）She _ (sing) well. 3）Tom and John _ (watch) TV every evening. 4）My son _ (go) to school by bike. 5）Their teacher usually _ (walk) to school. 6）Five plus two _ (make) seven. 7）They all _ (like) him. 8）The sun _ (fall) in the west.,Practice,love,sings,watch,goes,walks,makes,like,falls,4）His father and mother like watching TV. 5）She does her homework in t