一般现在时(精讲)

一般现在时Bonnie◊Ialwaysgetupatsixinthemorning.◊Tonyleaveshomeforschoolat7:00everymorning.定义一：1.表示经常的或习惯性的动作，常与表示频率的时间状语连用。◊Theearthmovesaroundthesun.◊ZhengzhouliesinthemiddleofChina.◊Pridegoesbeforeafall.定义二：陈述客观真理，客观存在，科学事实。◊Idon'twantsomuch.我不想要太多。◊WangAnwritesgoodEnglishbutdoesn'tspeakwell.王安英语写得很好但是说的不好定义三：描述主语的状态、性质、特征、能力等，目的是为了“描述现阶段的动作或者状态。基本结构一、系动词be的一般现在时二、情态动词的一般现在时三、实义（行为）动词的一般现在时一、系动词be的一般现在时主语+be(am,is,are)+其他Thegirlismyfriend.主语为单数时→is主语为复数时→are主语为“I”时→am二：情态动词的一般现在时主语+情态动词+动词原形+其他ShecanspeakEnglish.注意：情态动词后的动词一定要用原形基本结构三：行为动词的一般现在时主语+行为动词+其他Theseboyslikeplayingfootball.ThegirlreadsEnglisheverymorning.注意：当主语为第三人称单数时，行为动词要变成动词单数形式基本结构动词变单三规则1.一般情况下，直接加-s，如：cook-cooks2.以s.x.sh.ch.o结尾,加-es,如：guess-guesses,watch-watches3.以“辅音字母+y结尾，变y为i，再加-es,如：study-studies4.不规则变化have-hasam/are-is练一练用be动词适当形式填空1.KittyanEnglishgirl.2.Westudents.3.IfromTaizhou.4.Shetall.5.LucyandLilygoodfriends.6.Thosechairsbroken.7.Thebagmine.isareamisareareis练练手1.Jordan_______(play)basketball.He___________(notplay)football.2.I_______(go)swimmingonSunday.ButI___________(notgo)shopping.3.Mycousins_______(enjoy)computergames.Butthey__________(notenjoy)ballgames.4.You_______(like)fish.Buthe___________(notlike)fish.playsdoesn’tplaygodon’tgoenjoydon’tenjoylikedoesn’tlike12时间状语every系列•day•year•month•week•morning•afternoon•evening时间状语seldomrarelysometimesoftenusuallyalwaysnever频率副词频率由高到低）alwaysusuallyoftensometimesSeldomnever通常说来，always表示100%，usually表示80%，often表示60%，sometimes表示40%，seldom表示20%，never表示0%。时间状语一次once两次twice三次threetimes一周两次twiceaweek每周四次fourtimesaweek每周六onSaturdays每周日onSundays现在now时不时fromtimetotime……否定句主语+be+其他→主语+be+not+其他有be否be,有情否情,无情无be否助动(do/does）isnot=isn’tamnot=’mnotarenot=aren’t主语+情态动词+not+动词原形+其他cannot=can’tcouldnot=couldn’tmustnot=mustn’twouldnot=wouldn’twillnot=won’tshouldnot=shouldn’t句型变换否定句主语+实义动词+其他→主语+助动词（do/does）+not+行为动词原形+其他◊Theseboyslikeplayingfootball.Theseboysdon’t（donot）likeplayingfootball.◊ThegirlreadsEnglisheverymorning.Thegirldoesn’t（doesnot）readEnglisheverymorning.句型变换练练手1.Kitty(benot)anEnglishgirl.2.We(benot)students.3.I(benot)fromTaizhou.4.She(benot)tall.5.LucyandLily（benot）goodfriends.6.She__________(cannotspeak)English.7.They__________(shouldnotbe)right.isn’taren’tamnotisn’taren’tcan’tspeakshouldn’tbe一般疑问句及肯定否定回答有be提be,有情提情,无情无be找兄弟(do/does),借了兄弟把动词打回原形主语+be+其他→Be+主语+其他?肯否回答：Yes，主语+be./No，主语+be+not.Iamanursenow.→AreyouanurseYes,Iam./No,Iamnot.主语+情态动词+动词原形+其他→情态动词+主语+动词原形+其他?肯否回答：Yes，主语+情态动词./No，主语+情态动词+not.BonniecanspeakFrench.→CanBonniespeakFrench.Yes,shecan./No,shecannot(can’t).句型变换一般疑问句及肯定否定回答主语+be+其他→Be+主语+其他?肯否回答：Yes，主语+be./No，主语+be+not.主语+情态动词+动词原形+其他→情态动词+主语+动词原形+其他?肯否回答：Yes，主语+情态动词./No，主语+情态动词+not.主语+行为动词+其他→助动词（do/does）+主语+动词原形+其它？肯否回答：Yes,主语+do/does./No,主语+donot/doesnot.助动词也常用缩写形式，主要有don’t，doesn’t句型变换练练手之句型转换1.Mr.GreencomesfromShanghai.(改为一般疑问句)2.MillielivesinaflatinBeijing.(改为否定句)3.Danielenjoysplayingcomputergames.(改为一般疑问句并做肯定回答)DoesMr.GreencomefromShanghai?Milliedoesn’tliveinaflatinBeijing.DoesDanielenjoyplayingcomputergames?Yes,hedoes.练练手之用动词的适当形式填空1.Myfather_______(listen)totheradioeveryday.2.Mike_______(study)inamiddleschool.3.She______(take)Eddieforawalkaftersupper.4.He_______(wash)clotheswithhishands.5.Simon______(pass)theballtoDaniel.6.MissLi_______(teach)Chinese.7.Lookattheanimal,it____fourlegs.listenstakesstudieswashespassesteacheshas8注意：some、anyWhynotbuysomeapples?为什么不买些苹果呢?Wouldyoulikesomemoreapples?你要不要再吃点苹果?注意：在表示建议或希望得到肯定回答时，some可用于疑问句，不用变成any.注意：some、anyWhynotbuysomeapples?为什么不买些苹果呢?Wouldyoulikesomemoreapples?你要不要再吃点苹果?注意：在表示建议或希望得到肯定回答时，some可用于疑问句，不用变成any.注意：andor变否定句时，and要变成orThereissomeairandwateronthemoon.→Thereisn'tanyairorwateronthemoon.Hehassomebrothersandsisters.→Hedoesn’thaveanybrothersorsisters.注意：too要改为either在否定句当中，too要改为eitherIlikeeatingapples,too.→Idon’tlikeeatingapples,either.