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1陈述句含义：用于陈述事实和观点的句子。陈述句包括肯定结构和否定结构。Thisisadesk.（肯定结构）Hecansinganddance.（肯定结构）Hedoesn’thaveacomputer.（否定结构）Therearen’tanypictures.（否定结构）肯定句变否定句：1.be动词的否定式be:am,is,are,waswere构成否定式时，一律在后面加否定词notHeisreading.→Heisnotreading.TheyarefromChina.→TheyarenotfromChina.2.情态动词的否定式情态动词：can,could,must,may,might,will,would，shall,should,need,……构成否定式时，一律在情态动词后面加否定词notIcanswim.→Icannotswim.Youshouldarrivehereontime.→Youshouldnotarrivehereontime.3.实意动词的否定句实意动词：即行为动词,表示动作的动词。它分为及物动词和不及物动词两种（及物动词是指后面要求有宾语的动词；不及物动词指后面不需要跟宾语的动词）构成否定式时，要借助助动词do,does,did，在一般现在时中用do或者does，在一般过去时中用did。结构为：主语+don’t\doesn’t\didn’t+动词原形+其它Ilikepopmusic.→Idon’tlikepopmusic.Sheoftenswims.→Shedoesn’toftenswim.Hehandedinhishomework.→Hedidn’thandinhishomework.一般疑问句含义：一般疑问句是疑问句的一种。它是只用yes（是）或no（否）来回答的句子。其结构是：系动词be/助动词/情态动词+主语+其他成分1)谓语动词是be动词规律：Heisastudent.Isheastudent?2Sheisswimming.Issheswimming?2)谓语中含有助动词have/has/had(通常是在现在完成时和过去完成时中：have/has/had+过去分词)规律：Tomhasfinishedhishomework.→HasTomfinishedhishomework?Ihaveeatenbreakfast.→Haveyoueatenbreakfast?3)谓语动词中含有情态动词时。规律：Hecanswim.→Canheswim?Ishouldgotoschool.→ShouldIgotoschool?4)谓语动词是行为动词，必须在句首加上助动词。加上这些助动词后，句子中谓语动词必须用原形。规律：Tombuiltasciencelabhimselflabwhenheis20yearsold.→DidTombuildasciencelabhimselflabwhenheis20yearsold？Shelikesdrinkingmilk.→Doesshedrinkmilk?Theyoftenswim.→Dotheyofenswim.注意：1.把肯定句改成一般疑问句时，要注意句中是否有already,some,something,somebody等词，如果有，就要进行改变。already,some,something,somebody等分别改成yet,any,anything,anyoneShehasalreadyfinishedherwork.→Hasshefinishedherworkyet?2.注意人称的变化。Mymotherisateacher.Isyourmotherateacher?3.以下问句固定的回答：Isthis/that/a/an+物--------yes,itis./No,itisn’t.Arethey/those/these…?---------Yes,theyare./No,theyaren’t.特殊疑问句含义：以疑问代词或疑问副词开头，提出疑问的句子。基本结构：特殊疑问词+一般疑问句注意：A疑问词的选择：1.疑问代词who谁，whom谁，whose谁的，which哪些(个)，what什么2.疑问副词（作状语）3when何时，where何地，why为什么，how如何，howmuch多少(不可数)，howmany多少(可数），howlong多久，howold多大年纪，howfar多远。1)问“谁”用who或whomLeileiisadoctor.Whoisadoctor?(对主语提示用who,对宾语提问用who,whom均可)2)问“谁的”用whoseThisishisbook.Whosebookisthis?3)问“哪个”用which,whatIlikethisoneamongthesreethree.Whichdoyoulikeamongthesethree?IlikeEnglishbest.Whatdoyoulikebest?4)问“时间”用when或whattimeIgothereinthemorning?WhendoyougothereItis4o’clock.Whattimeisit?(when既可以对时间点提问，也可对年、月、日等时间提问;whattime通常只对时间点提问)5)问“地点”用whereTheballisunderthebed.Whereistheball?6)问“原因”用WhyHedidnotcomebecausehewasill.Whydidnothecome?7)问“方式”或“身体状况”用howHediditinthatway.Howdidhedoit.Iamfine.Howareyou?B疑问句的语序：1．对句子的主语提问，其语序是疑问词+谓语+其他成分Sheistheirteacher.Whoistheirteacher？2．对句子主语的定语提问，其语序是疑问词+主语+谓语+其他成分Mybookisoverthere.Whosebookisoverthere?3．对表语、宾语或状语提问，其语序是疑问词+一般疑问句HelivesinBeijing.Wheredoeshelive?4．对表语或宾语的定语提问，其语序是疑问词+表语或宾语+一般疑问句Iamlookingformywatch.Whosewatchareyoulookingfor?C如何完成对划线部分提问？1.针对划线部分找准要使用的特殊疑问词2.把原句变成一般疑问句3.用第一步中的特殊疑问句加第二步的一般疑问句（去掉划线部分）4MynameisMary.What为疑问词IsyournameMary?Whatisyourname?TheyarefromJapan.Marymadeacakeforhermother.HehadlearnedEnglishbeforehewenttomiddleschool.Thesunrisesintheeast.Theycangotherebybus.练习选择正确的单词填空1._____isthatprettygirl?Sheismysister.2._____areJackandTom?Theyarebehindyou.3._____doyougotoschool?IgotoschoolfromMondaytoFriday.4.______aretheapples?Theyare10yuan.6._____isyourmother?Sheisateacher.7._____areyougoing?Wearegoingtothebakery(面包坊).8.______didJimandWendytraveltoBeijing?Theytraveledtherebyplane9.____________istheskirt?It’sred.10._________doyougotothecinema?Twiceeveryweek.11.didyoubelateforschool?BecauseIgotuplate.一．将下列句子改成一般疑问句：1.Itisalovelydog.________________________________________2.Iamadoctor._____________________________________3.Weareclassmates._____________________________________4.Iplaycomputergameseverynight._____________________________________5.HelikesEnglish._____________________________________6.Hisfathergoestoworkbybus._____________________________________7.Iwantanewtoy._____________________________________8.Shefinishedreadingthebookstwodaysago.____________________________9.Shehassomestorybook._____________________________________10.Icandanceandsing._____________________________________11Hehassomebrothers._____________________________________12.TheyhavegonetoBeijing._____________________________________513.Shehasfinishedherhomework._____________________________________把肯定句变为否定句1.HisfatherisanEnglishteacher._____________________________________.2.Thesecatsarecrying.（喊叫）_____________________________________.3.Theycanswim._____________________________________.4.Theywenttoworkonfootlastyear.___________________________________.5.HelikesEnglish._________________________________________6.Theywerestudents..7.Shewasshy.I.对画线部分提问、1．Theyboughtanewbikeyesterday.____________________________________________________2．Sheisanurse.____________________________________________________3．Sheismyteacher.____________________________________________________4．Heboughttheredone.____________________________________________________5．Itismycoat.____________________________________________________6．Iamlookingformysister.____________________________________________________7．Igetupatsix.____________________________________________________