小学四种时态句子结构以及各种时态标志词一般现在时的句型结构一般现在时的标志:sometimes,often,usually,always,everyday,fivedaysaweek,threetimesamonth等.含有be动词的句子结构的变化:①肯定句:主语+be(am,is,are)+其他。如:Iamaboy.我是一个男孩。②否定句:主语+be+not+其他。如:Heisnotaworker.他不是工人。③一般疑问句:Be+主语+其它?如:-Areyouastudent?Yes.Iam./No,I'mnot.④特殊疑问句:疑问词+一般疑问句?如:Whereismybike?含有行为动词的句子结构的变化:①肯定句:主语+行为动词(+其它)。如:WestudyEnglish.我们学习英语。②否定句:主语+don't(doesn't)+动词原形(+其它)。如:Idon'tlikebread.Hedoesn'toftenplay.③一般疑问句:Do(Does)+主语+动词原形+其他?如:-Doyouoftenplayfootball?Yes,Ido./No,Idon't.-Doesshegotoworkbybike?Yes,shedoes./No,shedoesn't.④特殊疑问句:疑问词+一般疑问句?即:疑问词+Do(Does)+主语+动词原形+其他?如:Howdoesyourfathergotowork?一般过去时句型结构一般过去时标志词:yesterday,last···,theotherday,thedaybeforeyesterday,ago和过去的某个时间,具体如下:(1)yesterday,yesterdaymorning/afternoon/evening,lastweek,lastyear,attheendoflastterm/week/month/year等,(2)一段时间+ago如:tenyearsago,fivehoursago,(3)过去的某个时间,如:onJanuary1st,2004,inthe1980s等.1.含有be动词的句子结构的变化:⑴am和is在一般过去时中变为was。(wasnot=wasn’t)⑵are在一般过去时中变为were。(werenot=weren’t)⑶带有was或were的句子,其否定、疑问的变化和is,am,are一样,即否定句在was或were后加not,一般疑问句把was或were调到句首,特殊疑问句的结构为:疑问词+一般疑问句。2.含有行为动词的句子结构的变化:肯定句:主语+动词过去式+其他。如:Jimwenthomeyesterday.否定句:主语+didn’t+动词原形。如:Jimdidn’tgohomeyesterday.一般疑问句:Did+主语+动原+其他?如:DidJimgohomeyesterday?特殊疑问句:⑴疑问词+did+主语+动词原形+其他?如:WhatdidJimdoyesterday?⑵疑问词当主语时:疑问词+动词过去式+其他?如:Whowenttohomeyesterday?一般将来时句型结构一般将来时标志词:thismorning,thisSunday,tomorrow,next,soon,later,inafewdays,inthefuture,fromnowon,或者未来的某个时间,如intheyear2500等。1.用begoingto表达①肯定句:主语+be(am/is/are)+goingto+动词原形+其他如:Wearegoingtohaveafootballmatchinsixdays.我们六天后将要进行足球比赛。②否定句:主语+be(am/is/are)+not+goingto+动词原形+其他如:Wearen'tgoingtohaveafootballmatchinsixdays.我们六天后将不进行足球比赛。③一般疑问句:Be(am/is/are)+主语+goingto+动词原形+其他?如:Areyougoingtohaveafootballmatchinsixdays?你们六天后将进行足球比赛吗?④特殊疑问句:疑问词+一般疑问句?即:疑问词+am/is/are+主语+goingto+动词原形+其他?如:Whenarewegoingtohaveafootballmatch?2.用will/shall表达①肯定句:主语+will/shall(常用于第一人称)+动词原形+其他如:ShewillgotoBeihaiParktomorrow.她明天将要去北海公园。②否定句:主语+will/shall(常用于第一人称)+not+动词原形+其他如:Shewon'tgotoBeihaiParktomorrow.她明天不去北海公园。③一般疑问句:Will/shall(常用于第一人称)+主语+动词原形+其他?WillshegotoBeihaiParktomorrow?她明天将要去北海公园吗?④特殊疑问句:疑问词+一般疑问句?即:疑问词+Will/shall(常用于第一人称)+主语+动词原形+其他?如:Whatwillshedotomorrow?现在进行时句型结构现在进行时标志词:now,atthemoment,look,listen,when,at+时间等。1)肯定句:主语+am/is/are+V-ing+其他。如:Nancyisreadingabooknow.南茜正在读书。Thetwinsareplayingintheirbedroom.那对双胞胎正在卧室里玩。2)否定句:主语+am/is/are+V-ing+not+其他。如:Nancyisn’treadingabooknow.南茜没有正在读书。Thetwinsaren’tplayingintheirbedroom.那对双胞胎没有正在卧室里玩。3)一般疑问句:Am/Is/Are+主语+V-ing+其他?如:IsNancyreadingabooknow?南茜正在读书吗?Arethetwinsplayingintheirbedroom?那对双胞胎正在卧室里玩吗?4)特殊疑问句:疑问词+一般疑问句?即:疑问词+am/is/are+主语+V-ing+其他?如:Whataretheydoingnow?Whereisheplaying?