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新概念1--72课语法总结及练习一.一般现在时表示一般性，经常性的动作或一般性事实。1、含有be动词的句子Heisateacher.★变疑问句将be动词移到句首Isheateacher?★肯定回答及否定回答Yes,heis./No,heisnot.★变否定句在be动词后面加notHeisnotateacher.2、不含be动词的句子，即含有一般动词的句子。(1)第三人称单数及单数名词Helikesbooks.★变否定句在主语及动词之间加doesn‘t,动词变为原型，原句中的动词不再有第三人称变化。★Hedoesn'tlikebooks.变疑问句在句首加does,动词变为原型Doeshelikebooks?★肯定回答及否定回答：Yes,hedoes./No,hedoesn't.(2)其他人称及复数名词Iwanttohaveabath.★变疑问句在句首加doDoyouwanttohaveabath?★变否定句在主语和动词之间加don't.Youdon'twanttohaveabath.★肯定回答及否定回答Yes,Ido./No,Idon't.一般现在时的标志词usually,sometimes,always,often，everyday\month\year,never•改句子•1.Doyouoftenplayfootballafterschool?(肯定回答)•2.Ihavemanybooks.（改为否定句）•3.GaoShan’ssisterlikesplayingtabletennis（改为否定句）•4.ShelivesinasmalltownnearNewYork.（改为一般疑问句）•5.IwatchTVeveryday.（改为一般疑问句）•6.Davidhasgotagoal.（改为一般疑问句）•7.Wehavefourlessons.（否定句）•8.Nancydoesn’trunfast（肯定句）•9.Mydogrunsfast.否定句：一般疑问句：•10.Mikehastwolettersforhim.•一般疑问句：否定句：•11.IusuallyplayfootballonFridayafternoon.•否定句:一般疑问句:划线提问•12.SuYangusuallywashessomeclothesonSaturday.•否定句:一般疑问句:划线提问:•13.Mingmingusuallywaterstheflowerseveryday•否定句:一般疑问句:划线提问•14.Tomdoeshishomeworkathome.•否定句:一般疑问句:划线提问二、现在进行时表示现在正在进行的动作。构成：主语＋be动词＋动词的现在分词＋其它成分肯定句：Wearehavinglunch.★变疑问句将be动词移到句首Areyouhavinglunch?★变否定句在be动词后面加notWearenothavinglunch.★特殊疑问句：what,which,how,where,who,etc.疑问词＋动词＋主语＋现在分词Whatareyoudoing?动词加ing的变化规则（1）一般情况下，直接加ing，如：cook-cooking（2）以不发音的e结尾，去e加ing，如：make-making,taste-tasting（3）如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing，如：run-running,stop-stoppingsit-sittingget-gettingrun-runningforget-forgettingbegin-beginning（4）以ie结尾的动词，改ie为y加ing，die--dyinglie--lying•二、用所给的动词的正确形式填空：•1.Theboy________(draw)apicturenow.•2.Listen.Somegirls________(sing)intheclassroom.•3.Mymother_____(cook)somenicefoodnow.•4.What_____you______(do)now?•5.Look!They_____(have)anEnglishlesson.•6.They_____(not,water)theflowersnow.•7.Look!thegirls___(dance)intheclassroom.•8.Whatisoursondoing?•She______(listen)tomusic.•9.It’s5o’clocknow.•We______(have)suppernow.•10.______Helen________(wash)clothes?Yes,sheis.•三、句型转换：•1.Theyaredoinghousework.•一般疑问句：否定句：•2．Thestudentsarecleaningtheclassroom.•一般疑问句：否定句：•3．I’mplayingthefootballintheplayground.(对划线部分进行提问)•4．Tomisreadingbooksinhisstudy.•(对划线部分进行提问)一般过去时表示过去发生的动作或事件，常和表示过去的时间状语连用，如yesterday,lastnight,thedaybeforeyesterday,3daysago...1.含有be动词的句子，将be动词变为过去式。am,is的过去式为was,are的过去式为were：Iwasatthebutcher’s.★变疑问句将be动词移动到句首Wereyouatthebutcher's?★肯定回答否定回答Yes,Iwas./No,Iwasnot.★变否定句在be动词后面加notIwasnotatthebutcher's.★特殊疑问句Whatdidyoudo?（必背）不含有be动词的句子肯定句：将动词变为过去式：Ifinishedmyhomeworkyesterday.★变疑问句在句首加did，动词变为原型Didyoufinishyourhomeworkyesterday?★肯定回答及否定回答Yes,Idid./No,Ididn't.★变否定句在主语和动词之间加didnotIdidnotfinishmyhomeworkyesterday.规则动词过去式变化规则1一般动词加-ede.g.look-looked,watch-watched,play-played规则2以e结尾的加-de.g.make-maked,arrive-arrived规则3以辅音字母加结尾的变y为i加-edcry-cried,carry-carried规则4重读闭音节词结尾，即单词中只有一个元音字母，其后紧跟一个辅音字母的词，双写辅音字母再加-edstop-stopped过去式的读音在清辅音后面（除外）读/t/e.g.walked,jumped在浊辅音和元音后读/d/e.g.washed,watched在/t/，/d/后读/id/e.g.waited,hated