一般疑问句、特殊疑问句.doc

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’puter.(否定结构)Therearen’tanypictures.(否定结构)肯定句变否定句: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.→.→: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.→.→: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’.→Shedoesn’.→Hedidn’: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+其他成分谓语动词是be动词规律:??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?谓语动词中含有情态动词时。规律:Hecanswim.→Canheswim?Ishouldgotoschool.→ShouldIgotoschool?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.→: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,a