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12•情态动词是用于表示说话人的情绪,态度或语气。不能单独用,只能和其他动词原形一起使用。3HecandothatTheycandothatCanhedothat?Cantheydothat?HecannotdothatTheycannotdothat4情态动词can讲解1.can，“能、会”，表示“能力”例：我会/能讲英语。IcanspeakEnglish.我会唱歌。她会唱歌。Icansing.Shecansing.2.can，“可以”，表示“许可”例：你现在可以回家了。Youcangohomenow.你可以用这本书。Youcanusethisbook.5情态动词can讲解•3.情态动词没有“单三”变化，并且后面的动词永远用原形。•例：•Icanclimbthetree.•Hecanclimbthetree.•Theycanclimbthetree.6情态动词can讲解•4.can的句型结构•陈述句结构：主语+can+动词原形+其他•否定句结构：主语+can’t+动词原形+其他•疑问句结构：Can+主语+动词原形+其他+?•疑问句回答：Yes,主语+can.•No,主语+can’t•注意：cannot=can’t•例：•HecanswimintheYellowRiver.•Hecan’tswimintheYellowRiver.•CanheswimintheYellowRiver?•Yes,hecan.No,hecan’t.7情态动词can讲解•练习：•He______(canplay)basketball.(填空)•Mr.WangcanteachEnglish.(变否定句)•Xiaomingcanmakeacake.(变疑问句)•Cansheflyinthesky.(给出肯定和否定回答)8情态动词may讲解•1.表示许可或征求对方的许可，有“可以”的意思。•例如：•Youmaygonow.你可以走了。•MayIuseyourcomputer?我用一下你的电脑可以吗？9情态动词may讲解•2.may的句型•陈述句：主语+may+动词原形+其他•否定句：主语+may+not+动词原形+其他•疑问句：May+主语+动词原形+其他+？•回答：Yes,主语+may.•No,主语+can’t.•注意：用may提问时，肯定回答可以用may和can，否定回答用can’t10情态动词must讲解1.must“必须”，语气非常强烈，含有命令语气例：你必须早起。Youmustgetupearly.你必须8点到学校。Youmustgotoschoolat8.2.mustnot=mustn’t“禁止”、“不允许”，Childrenmustn’tplayontheroad.It’sverydangerous.孩子们不允许在路上玩耍，这样非常危险。11情态动词must讲解•3.must的句型结构：•陈述句：主语+must+动词原形+其他•否定句：主语+mustn’t+动词原形+其他•疑问句：Must+主语+动词原形+其他+？•回答：Yes,主语+must.•No,主语+needn’t.•例子：•Hemustbeateacher.他一定是个老师。•MustIgohomenow？我现在必须回家吗？•Yes，youmust.是的，你必须回家。•No，youneedn’t.不，你不必。12情态动词练习•1.—Look,it______beMrZhang.•—No,it______behim.Hehasgoneabroad.•A.may;mustn'tB.must;maynot•C.must;can'tD.can;maynot•2.Danny______gowithustonight，butheisn'tverysureyet.•A.mustB.mayC.canD.will•3.—______Itakethenewspaperaway?•—No,youmustn't.You______readitonlyhere.•A.Must;canB.May;can•C.Need;mustD.Must;must•4.Thechildren______playfootballontheroad.•A.needn'tB.can•C.mustn'tD.must13情态动词练习•5.—MustIdomyhomeworkatonce?•—No,you______.•A.needn'tB.mustn't•C.can'tD.maynot•6.There'snolighton.They______beathome.•A.can'tB.mustn't•C.needn'tD.shouldn't145、小学动词不规则变化无法无天只变单元音am/is-wasare-weredo-didhave-hadlearn-learntsee-sawgo-wentspend-spenteat-atemeet-metsay-saidfly-flewbend-bentbite-bithear–heardleave-leftmake-madepay-paidsend-sentrun-ransit-satsing-sangdrink-drankcome-cameswim-swamthrow-threwbecome-becamegive-gavebegin-begandrive-drovedraw-drewknow-knewrun-ranfall-fellforget–forgotget-gotride-roderise-rosesing-sangaught和ought变成“o”了teach-taughtcatch-caughtthink-thoughtbuy-boughtstand-stoodtake-tookget-gotwrite-wroteride-rodetell-toldspeak-spokewake-woke去“e”加“t”永远不变sleep-sleptfeel-feltsweep-sweptkeep-keptletputreadcuthithurtspread15小学不规则动词总结•1、直接+d：•agree,bake,believe,close，dance,exercise,like,live,type,welcome•2、改y为I加ed：•carry,cry,marry,study,try,worry•3、双写辅音字母：•chat，stop•4、有两种变化形式的：•learn–learned/learnt•travel-traveled/travelled•5、不变的：•hit-hitput-putcut-cuthurt-hurt•read-readlet-letspread-spread16小学不规则动词总结•6、特殊变化17不规则动词总结•不规则变化：•become-becamebegin-beganforget-forgot,ride-rode•bend-bent,bite-bit,buy，catch，come,sit-sat•choose-chose，do-diddraw-drew•drink-drankdrive-droveeat-atefall-fellfly-flewpay-paidrun-ran•get-gotgive-gavego-wenthave/has-hadhear–heardrise-rose•know-knewleave-leftmake-mademay-mightmeet-met•say-saidsee-sawsend-sentsleep-sleptspeak-spoke•swim-swamtake-tooktell-toldthink-thought•throw-threwunderstand-understoodwake-wokewrite-wrote