小学英语时态PPT.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,时态的讲解,时态：,英语的时态（,tense,）是一种,动词形态,，不同的时态用以表示不同的时间与方式。,是表示行为、动作和状态在各种时间条件下的动词形式。因此，当我们说时态结构的时候，指的是相应时态下的动词形式,时态：,一般现在时,现在进行时,现在时,一般过去时,一般将来时,一般现在时,概念：经常、反复发生的动作或行为及现在的某种状况。,2.,时间状语：,always,usually,often,sometimes,every week(day,year,month),once a week,on Sundays,3.,基本结构：,动词 原形（,do),（如主语为第三人称单数，动词上要改为第三人称单数形式,(does),）,一般现在时,基本结构：,1.be,动词：主语,+,be(am,is,are,)+,其它。如：,I am a boy.,我是一个男孩。,2.,行为动词：主语,+,行为动词,(+,其它,),。如：,We study English.,我们学习英语。,当主语为,第三人称单数,(he,she,it,),时，要在动词后加,-s,或,-,es,。如：,Mary likes Chinese.,玛丽喜欢汉语。,如主语为第三人称单数，动词上要改为第三人称单数形式,(,does),）,第三人称,单数,he she it,单个人名、地名或称呼作主语,.,单数可数名词或,this/that/the+,单数可数名词,作主语时,不定代词,someone,somebody,nobody,everything,something,等及指示代词,this,that,作主语时,.,不可数名词作主语时为第三人称单数。,动词第三人称单数形式变化,1.,一般情况下，直接在动词后面加,s,，,如：,like,make,like,s,make,s,2.,如动词以,o,ch,sh,s x z,，直接在动词后面加,es,，,如：,go,Watch,Wash,Guess,fix,go,es,watch,es,wash,es,guess,es,fix,es,动词第三人称,单数形式变化,3.,以字母,y,结尾的动词，,以,辅音字母,+y,结尾的动词，先变,y,为,i,，再加,es,，,ies,读,iz,。如：,fly,carry,fl,ies,carr,ies,以,元音字母,+y,结尾的动词，,直接,在动词后面加,-s,如：,pl,a,y,b,u,y,play,s,buy,s,不规则动词的变化如：,have,has,动词第三人称变化练习,1.drink 2.eat,3.clean 4.sweep,5.sit 6.sing,7.dance 8.listen,9.do 10.go,11.catch 11.finish,12.study 12.say,13.have 14.play,drink,s,eat,s,clean,s,sweep,s,sit,s,sing,s,dance,s,listen,s,do,es,go,es,catch,es,finish,es,stud,ies,say,s,has,play,s,动词第三人称变化练习,1.I (read)storybooks every day.,2.We (fly)kites on,sundays,.,3.They (go swimming)in the afternoons.,4.He (like buy)things at the weekends.,5.She (dance)in the evenings.,6.The cat is,lovely,it,(have)four feet.,7.David (help)his mum do housework on,sundays,.,8.Nancy (sing)at Music lessons.,9.Jim (do)his homework at five oclock every day.,10.YangLing and,SuYang,often (go)to school by bike.,一般现在时,现在进行时,现在时,现在进行时,概念：表示现在,(,指说话人说话时,),正在,发生的事情 或动作,.,2.,时间状语：,now,look,listen,.,3.,基本结构：,Be+,动词,ing,(,现在分词,）,现在进行时,表示现在,(,指说话人说话时,),正在,发生的事情 或动作,.,现在进行时：现在进行时由,be+,v-ing,构成,构成,:,主语,+be+,动词,ing,现在分词,形式,第一人称,+,am+v-ing,e.g.I,am,read,ing,第二人称,+,are+v-ing,e.g.You,are,listen,ing,to music,第三人称,+,is+v-ing,e.g.She/He is watch,ing,Tv,现在进行时,动词加,ing,的规则,一,.,直接在动词后面加,-,ing,1.do-do,ing,做,2.stand-stand,ing,站,3.sleep-sleep,ing,睡觉,4.eat-eat,ing,吃,5.sing-sing,ing,唱,6.drink-drink,ing,喝,7.read-read,ing,读,8.look-look,ing,看,9.walk-walk,ing,散步,10.watch-watch,ing,看飞,二,.,动词变现在分词,2:,以不发音的,e,结尾的去,e,加,-,ing,e com,ing,来,2.dance-danc,ing,跳舞,4.make mak,ing,制造,5.ride rid,ing,骑,6.write-writ,ing,写,7.take-tak,ing,拿走,10.have hav,ing,有,三,.,动词变现在分词,3:,重读闭音节，双写最后一个辅音字母，再加,-,ing,1.sit-sitt,ing,做,2.swim-swimm,ing,游泳,3.run-runn,ing,跑,4.cut cutt,ing,切,5.put putt,ing,放,6,get-gett,ing,得到,8.shop-shopp,ing,购物,10.begin-beginn,ing,开始,一、写出下列动词的现在分词,：,play_ run_ swim _,make_ go_ like_,write_ ski_ read_,have_ sing _ dance_,put_ see_ buy _,love_ live_ take_,come _ get_ stop_,sit _ begin_ shop_,play,ing,ru,nn,ing,swi,mm,ing,mak,ing,go,ing,lik,ing,writ,ing,ski,ing,read,ing,hav,ing,sing,ing,danc,ing,putt,ing,see,ing,buy,ing,lov,ing,liv,ing,tak,ing,com,ing,gett,ing,stopp,ing,sit,ing,beginn,ing,stopp,ing,1.He (read)a book now.,2.Look,they (,paly,)in the playground.,3.listen,she (sing)in the classroom.,See you!,