一般现在时动词变化规律.ppt

Grammar 一般现在时 (Simple Present Tense ) -行为动词的一般现在时,时态概念。,英语句子的时态是指在不同时间里发生的动作或存在的状态，要用动词的不同形式表示出来。,时态： 1、这种时态的用法。 （即何时用这种时态。 ） 2、这种时态的构成。,(一般现在时用法),I have long hair. My hair is long.,things that are true now.目前存在的事实,Simon plays football after school.,things that we do regularly. 经常做的事,Cats eat fish.,things that are always true.客观存在的事实,一. 当我们谈论以下几种情况时,用一般现在时： 1. 表示现在存在的状态; 2. 表示经常性、习惯性的动作; 3. 表示客观事实或普遍真理。 句中常用always, usually, often, sometimes, seldom, never, every day，in the morning等时间状语。,一般现在时的构成：,My name is Amy. He is ten years old. -be动词的一般现在时。 I often play football after school. He watches TV every day. -行为动词的一般现在时,动词的种类,行为动词的一般现在时的构成：（看例句并总结规律， 注意观察红色和蓝色字体。） 1、I play football every day . 2、You play football every day . 3、My friends play football every day . 4、He plays football every day . 5、Tom plays football every day . 6、My brother plays football every day .,总结规律： 1.一般在词尾加-s，清辅音后读作s，浊辅音和元音后读作z。如： 动词第三称单数：help(helps), play(plays) 2. 以s ,x ,ch ,sh结尾的词，在词尾加-es,原词尾已有e，一般只加-s都读作iz。如： 动词第三人称单数：wash(washes), close(closes) 3. 以辅音字母加-y结尾的词，先变y为i，再加-es，读作iz。如： 动词第三人称单数：fly(flies), study(studies),写出下列行为动词的第三人称单数形式： 1.like- 2.swim 3.work 4.catch 5.go- 6.study 7.worry 8.have- 9.do-,likes,swims,works,catches,goes,studies,worries,has,does,1. I _(go) swimming on Sunday. 2. My cousin_(enjoy) computer games. 3. My parents_(watch) TV. 4. Tom and Simon _(like) fish. 5. He _(swim)every day. 6.Tom_(play) football every day.,go,watch,like,swims,plays,enjoys,用所给词的适当形式填空,行为动词一般现在时的否定句和一般疑问句。 1、I speak English. 否定句：I do not /dont speak English. 一般疑问句：Do you speak English? 肯定回答：Yes, I do. 否定回答：No, I dont. 2、He speaks English. 否定句：He does not /doesnt speak English. 一般疑问句：Does he speak English? 肯定回答：Yes, he does. 否定回答：No, he doesnt. (注意蓝色和红色字体，总结规律。,行为动词一般现在时的否定句和一般疑问句 构成： 否定句：在行为动词前加do not或does not, 当主语是第三人称单数时，助动词用does. 在非正式行文中，do not和does not可以缩 写成dont 和doesnt. 一般疑问句：在句首加助动词do和does,当 主语是第三人称单数时，助动词用does. 注意：在疑问句和否定句中，助动词之后 的行为动词均用原形。,改错题： 1.I goes to school at six every day. 2.He dont like playing football. 3. I am watch TV every day. 4. Daming watchs TV in the evening. 5. Does he usually has a party? 6. Our English doesnt likes music. 7. Tony goes always to school at eight oclock. 8. Does your parents like watching TV? 9. Lily haves lunch at school. 10. My sister doesnt her homework every .,_,_,_,_,_,_,_,_,_,go,doesnt,去掉am,watches,have,like,always goes,_,do,has,doesnt do,注意：我们用一般现在时进行表达时， 不能同时使用be动词和行为动词,行为动词一般现在时的构成：（小结） 肯定句：当主语是第三人称单数时，行为动 词用 。主语是非第三人称单数，行为 动词用 。 否定句：在行为动词前加 , 当主语是第三人称单数时，助动词用 在非正式行文中，do not和does not可以缩 写成dont 和doesnt. 一般疑问句：在句首加助动词 ,当 主语是第三人称单数时，助动词用 . 注意：在疑问句和否定句中，助动词之后 的行为动词均用原形。,三单形式,does,原形,do not或does not,do和does,does,句型转换： 1、把下面句子改成一般疑问句并做肯定 和否定回答。2、改为否定句。 He watches TV every day. 2. I do my homework every day. 3. Lucy and Lily come from the USA. 4. She eats eggs every morning. 5. They do a lot of homework every day. 6. Im from Nanjing,动词的种类： 1、行为动词：含有实在的意义，表示动作或状 态，在 句中能做谓语。 例句：I often play football after school. He watches TV every day. I listen to the radio every day She has a sister. We like playing f