小学英语四种时态的区分及练习.doc

v1.0可编辑可修改v1.0可编辑可修改v1.0可编辑可修改一般现在时：表示经常习惯发生的事，经常与always（总是）,usually（通常）,often（经常）,sometimes（有时）,every(每个)，at+点钟连用。结构：主语是复数动词用原型，主语是第三人称单数动词用三单。三单变化规则：1.直接在动词后+s,例clean—cleans2.以s,x,ch,sh,或o结尾的动词+es例watch--watches,dish—dishes,fix--fixes,do—does,go—goes3.以辅音字母+y结尾的动词变y为i再+es,例fly—fliesstudy—studies(以元音字母+y结尾，直接+s例play—plays)不规则变化：have—has一般现在时句型转换：变疑问，当句子中有be或情态动词can时，一提，二变，三问号。变否定，在be或can后+not.例：肯定句Sheisagirl.疑问句Issheagirl否定句Sheisnotagirl.Icanswim.CanyouswimIcannotswim.2.变疑问，当句中没有be或can时，在句首+助动词（do或does）动词还原。变否定，在动词前+don’t或doesn’t,动词还原。例：肯定句Wegetupat6:oo.疑问句Doyougetupat6:00否定句Wedonotgetupat6:00.例：肯定句Hegoestoschoolbybus.疑问句Doeshegotoschoolbybus否定句Hedoesnotgotoschoolbybus.用动词的适当形式填空:(go)toschoolat7:00.often（eat）breakfastat6:10。uausally（study）Englishat17:30.（like）playingfootballafterschool.father(watch)TVeveryevening.(notlisten)tomusiconMonday.7.Tom(notgo)tothezooonSunday.8.There（be）someteainthecup.9.AmyandIoften___________(see)afilmontheweekend.she(do)homework现在进行时：表示正在发生或正在进行的事，句中经常有（now,look,listen,it’s+几点钟等提示词）结构:主语+be动词（am,isare）+动词ing(现在分词)现在分词变化规则：1.在动词后直接加ing,例:go-going。2.以不发音字母e结尾,去e再+ing,例：take-taking,3.辅元辅结构，且末尾只有一个辅音字母的动词要双写尾字母再加ing,例：swim-swimming,run—running,get—getting,put-putting,sit-sitting，begin—beginningstop—stopping,shop—shopping,现在进行时句型转换：肯定句Sheiscleaningherroomnow疑问句Isshecleaningherroomnow(一提，二变，三问号)否定句Sheisnotcleaningherroomnow(在be动词后+not)特殊疑问句的结构：疑问词+be+主语+动词ing例:Whatareyoudoing.一、写出下列动词的现在分词：play________run________swim________make________go________like________write________skate________read________have________sing________dance________put________see________buy________love________live________take________come________get________stop________sit________begin________shop________write二、用所给的动词的正确形式填空：boy_______(draw)apicturenow.2.Listen.Somegirls________(sing)intheclassroom.3.Mymother________(cook)somenicefoodnow.4.What________you________(do)now5.Look.They_______(have)anEnglishlesson.________(notwater)theflower