概 念,特 征,变 形,规 律,英语动词的“三单”形式,什么是动词的,“三单”形式啊？,什么是“三单”？,“三单”是“第三人称单数”的简称英语中的第三人称与汉语中一致，为他（,he,）、她（,she,）、它（,it,）除此之外，具体的个人或个物也是第三人称单数形式，如：,Tom,a boy,a dog,等等我是,I,第一人称,你是,you,第二人称,我们,we,他们,they,你们,you,复数,男他,he,女她,she,物它,it,单个人名,单个事物,单个地点,第三人称,单数,动词的第三人称单数特征,根据主语的,人称,和,单复数,不同，英语中,谓语动词,的形式也有所不同如：,I,eat,an apple.,You,do,your homework,.,She,eats,an apple,.,He,does,his work.,如上所示，当主语为第三人称单数时，动词要做相应的变化，这就是动词的“三单”形式动词第三人称单数一般以,-s,-es,-ies,结尾动词“三单”的变化,get,make,read,live,walk,eat,eats,lives,makes,gets,reads,walks,观察一：上述单词变形有何规律？,teach,wash,catch,fix,match,guess,matches,washes,teaches,catches,fixes,guesses,观察二：上述单词变形有何特征？,study,fly,try,copy,carry,identify,flies,copies,studies,tries,identifies,carries,观察三：上述单词变形有何规律？,动词“三单”的变化规律,观察一,：,一般动词,后面直接加,-s,.,例如：,work-works,，,get-gets,，,say-says,，,read-reads,观察二：,以,ch,sh,s,x,或,o,结尾,的动词,在后面加,-es,。
例如：,go-goes,，,teach-teaches,，,wash-washes,，,brush-brushes,catch-catches,，,do-does,，,fix-fixes,观察三：,以辅音字母,+y,结尾,的动词，把,y,变为,i,再加,-es.,例如：,study-studies,，,try-tries,，,carry-carries,，,fly-flies,，,copy-copies,注意,除了上述基本规律之外，英语中还存在一些无规则的第三人称单数变形这些需要我们特别记忆，如：,go-,goes,do-,does,have-,has,练习,用所给单词的适当形式完成句子1,、,He often _ basketball with his brother Tom.(play),2,、,Amy _ many women dancing in front of the supermarket.(watch,）,3,、,My father _ to work at 7:30 every day.(go),4,、,The plane _ from Beijing to NewYork.(fly),5,、,The dog _ to jump over the fence.(try),6,、,Tina _ a sister and two brothers.(have),plays,watches,goes,flies,tries,has,1.My teacher _ (speak)Chinese well.,2.She _ (love)reading.,3.Ted _(have)a brother.,4.I _(is,am,are)a student.,用单词恰当形式填空,speaks,loves,has,am,5.You _ (study)English well.,6.We _(like)singing.,7.John _ (spend)a lot of time with TV.,8.My brother _ (watch)TV every night.,study,like,spends,watches,肯定句变否定：,1.,找,is,am,are,can,等词。
变否定更容易，词后,not,莫忘记2.,添,：,动词是,原形,，动词前加,dont,动词是第三人称,(-s),在动词前加,doesnt,，动词变原形,3.,如果还有,some,在，快用,any,换过来变否定,I am a new student.,否定：,am,am,not,2.She has a toy.,否定,:,has,does,not,have,3.Ted works in a school.,否定,:works,does not work,4.He plays table tennis well.,否定：,plays,does not play,5.,They can speak English,.,否定：,can,can not,6.It love eating meat.(love),否定,:loves,doesnt love,7.This is an apple.,否定：,is,is not,8.Graces father spends some time with Grace.,否定：,spends,doesnt spend,。