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《小学英语四大时态课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、小学英语时态时间状态四种时态一般现在时现在进行时一般过去时一般将来时一般现在时一般现在时：表示经常性、习惯性的动作或客观事实。时间标志词：1)频率副词always总是,usually通常,often经常,sometimes有时,never从不；2)everyyear/month/week/day每年/月/周/天句子结构：1.主语+is/am/are(be动词）+其他2.主语+实义动词原形/三单（动词加s或es）+其他三单主语：he,she,it,单个人（如myfather,yoursisiter)，单个物(thecat,thedog)。
2、一般现在时动词变三单：1）直接加s，如：come-comes2)以o,x,s,sh,ch结尾+es,如:do-does,go-goes,wash-washes,watch-watches3）辅音字母加y结尾，变y为i+es，如：fly--flies,study-studies,cry-cries4）特殊：have-has一般现在时（1）句中有be动词或can时,变疑问句:把be和can提前，开头大写，句末加问号。变否定句：在be和can后加not一般现在时①陈述句：Sheisastudent.疑问句→Issheastudent?否定句→
3、Sheisnotastudent.②陈述句：Icanswim.疑问句→Canyouswim？否定句→Icannotswim.一般现在时（2）当句子中即没有be动词和can时①陈述句：Wegetupat7:00everymorning.疑问句→Doyougetupat7:00everymorning?肯定回答：Yes,wedo.否定回答：No,wedon't.否定句→Wedon’tgetupat7:00everymorning.②陈述句：Shehasalittlebrother.疑问句→Doesshehavealittlebrother?
4、肯定回答：Yes,shedoes.否定回答：No,shedoesn't.否定句→Shedoesn’thavealittlebrother.一般现在时1.Sheisagirl.否定句:一般疑问句:肯定回答:否定回答：Sheisn'tagirl.Issheagirl?Yes,sheis.No,sheisn't.一般现在时2.Heoftengoestoschoolatseven.否定句:一般疑问句:Hedoesn'toftengotoschoolatseven.Doesheoftengotoschoolatseven?肯定回答：Yes,hed
5、oes.否定回答：No,hedoesn't.选择题()1..Tomisaworker.He_____inafactory.Hissisters______inahospital.work,workB.works,workC.work,works()2.Who________Englishbestinyourclass?speakB.speaksC.speaking()3.Heoften__________thewindows.A.iscleaningB.cleanC.cleans()4.We________musicandoften__
6、________tomusic.like,listenB.likes,listensC.like,arelisteningBBCA填空1.I____________fromChina.(be)2.JackandTom_________myfriends.(be)3.Myparents______(read)bookseveryday.4.LiLeialways______toschoolat7:30.(come)5.Youalways______(do)yourhomeworkwell.amarereadcomesdo现在进行时表示正在
7、进行的动作或事情。时间标志：now,look,listen…其构成形式是主语+be(am/is/are)+动词ing现在进行时动词ing的变化规律：1）直接加ing，如：open-opening,clean-cleaning2）去掉词尾不发音的e，如：take-taking,have-having,come-coming，dance-dancing，make-making，write-writing3）重读闭音节的，双写最后的字母，加ing,如：put-putting,begin-beginning,swim-swimming,run-
8、running,sit-sitting，stop-stopping现在进行时否定形式:在be动词后面加not例如：Iamnotsinging.Theyaren’twriting.一般疑问句及回答：把be动词
