小学现在进行时课件-PPT(精)

的标志性词语有now,look,atthemoment,listen等现在进行时的基本构成:主语+be动词+现在分词Eg:Theyaredrawingpictures.现在进行时现在分词的构成规则:1.一般在动词词尾加-ing,如:read-reading2.以不发音e结尾,去e加-ing,如:write-writing3.以重读闭音节结尾的动词,末尾只有一个辅音字母,应先双写这一字母,再加-ing。Eg:swim-swimmingrun-runningcut-cuttingshop-shoppingsit-sitting特殊变化:lie-lying平躺,die-dying死亡常用的现在分词一般在动词原型后+inggoasktalkgoingaskingtalking以不发音的e结尾的,去e,+ingwritetakelivewritingtakingliving重读闭音节以一个辅音字母结尾的,双写这一字母+inggetrunswimputshopgetingrunningswimmingputtingshopping现在进行时的句式:1.肯定句—主语+be+doingEg:Iamdoingmyhomework.2.否定句—主语+be+not+doingEg:Iamnotdoingmyhomework.3.一般疑问句—be提到句首(注意人称变化)Eg:Areyoudoingyourhomework?现在进行时Whatishedoing?Heiswriting.Whatisshedoing?Sheisreading.现在进行时Whatareyoudoing?Iamrunning.现在进行时Whatishedoing?puter.现在进行时Whatishedoing?Heisplayingbasketball.现在进行时Whatisshedoing?Sheisdrinking.