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1、一般现在时的构成,一、系动词be的一般现在时二、情态动词的一般现在时三、实义（行为）动词的一般现在时,一、系动词be的一般现在时,1、构成：,主语+be+其他,2、be 包 括 哪 些？,is am are,3、什么时候用is？什么时候用am？什么时候用are？,取决于主语是单数还是复数,The girl is my friend.,主语为单数时主语为复数时主语为“I”时,is,are,am,情态动词的一般现在时,构成:,主语+情态动词+动词原形+其他,She can speak English.,注意：情态动词后的动词一定要用原形,Eg:They should(应该)be right.,试比
2、较：They are right.She speaks English.,行为动词的一般现在时,一、什么是行为动词 这里所说的行为动词,指的是除be动词、情态动词和助动词之外的全部动词。,二、基本用法,1）表示现在经常发生或习惯性的动作或状态：I usually walk to school.My grandfather watches TV every evening.2）表示客观事实或普遍真理：The earth moves round the sun.,三、常与一般现在时搭配使用的时间状语,1）表示时间频度的词语：always usuallyoftensometimeshardlynev
3、er,2）与every一起用的状语词组：,every,dayweekmonthspringyearMonday,every other day(=every two days)every three hoursonce every two months,3）其他,in,the morningthe afternoonthe evening,twice a week,四、行为动词的一般现在时构成,1.肯定句构成:,主语+行为动词+其他,These boys like playing football.,The girl reads English every morning.,注意：当主语为第三
4、人称单数时，行为动词要加s或者es,什么时候加s，什么时候加es呢？,当主语是第三人称单数时，动词需变化 1、多数在动词后加s playplays likelikes read-reads sing-sings dance-dances 2、以s，x，sh，ch，o结尾的动词加es gogoes washwashes watch-watches 3、以辅音字母加y结尾，把y改i再加es flyflies studystudies try-tries,Complete the sentences.Use the simple present tense of the verbs in brack
5、ets,My father_(listen)to the radio every day.Mike_(study)in a middle school.She_(take)Eddie for a walk after supper.He_(wash)clothes with his hands.Simon _(pass)the ball to Daniel.Miss Li_(teach)Chinese.Look at the animal,it _ four legs.,listens,takes,studies,washes,passes,teaches,has,8,2.否定句的构成：,主语
6、+do+not+动词原形+其他 主语+does+not+动词原形+其他e.g.They dont have sports every day.Lucy doesnt have sports every day.,Change the following sentences after the models.,I like red.(green)They like apples.(oranges)We take a bus to school every day.(walk to school),I dont like green.,They dont like orange.,We dont
7、walk to school every day.,10,3.一般疑问句构成,助动词（do/does)+主语+动词原形+其它？,肯定回答:“Yes,主语+do/does.”否定回答:“No,主语+do not/does not.”助动词也常用缩写形式，主要有dont，doesnt Do your parents like English？肯答：Yes，they do.否答：No，they dont.,4.特殊疑问句构成,特殊疑问词+助动词（do/does)+主语+动词原形+其它？,What do your parents like？,句型转换,1.Mr.Green comes from Sha
8、nghai.(改为一般疑问句)2.Millie lives in a flat in Beijing.(改为否定句),Does Mr.Green come from Shanghai?,Millie doesnt live in a flat in Beijing.,3.Daniel enjoys playing computer games.(改为一般疑问句并做肯定回答),Does Daniel enjoy playing computer games?,Yes,he does.,根据图画利用所学的一般现在时造句。,Jim plays computer games every Monday.
9、,Jim Play computer gamesevery Monday,my mother read booksevery morning,My mother reads books every morning.,Mary sing songsevery Thursday,Mary sings songs every Thursday.,he play basketballevery Saturday,He plays basketball every Saturday.,They go shopping every Sunday.,they go shoppingevery Sunday,my father and Igo swimmingevery Sunday,My father and I go swimming every Sunday.,用动词的适当形式填空。1 She _(get)up at 6:30 every morning.2 His father _(ride)a bike to go to work every day.3 Jim _(go)shopping on Sundays.4 There _(be)some bread on the table.,gets,rides,goes,is,
