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Unit4ThenandnowWords:telephoneofficeintheofficemobilephoneradiolistentotheradionewspaperreadnewspapersfornews看报纸获得新闻e-bookwatchTVstillspelluseanywherecallpeopleanywhereusethetelephonetocallpeople很久以前longlongagothenandnowmakefriendsmakeasentencewritelettersto…writee-mailsallovertheworlddosomeshoppingbuythingsfromshopslookoutof…goondoingsth.waitforontheInternetgetangry一般时态复习:TheSimplePresentTense一般现在时TheSimplePastTense一般过去时一般现在时1）表示事物或人物的特征或状态。eg.Heisastudent.2）表示经常性或习惯性的动作。eg.Heusuallygetsupat6:30inthemorning.标志词:often,usually,onSunday/weekends...一般过去时1）表示过去某个时间发生的动作或存在的状态。eg.Igotupat6:30yesterday.（动作）Iwasathomelastnight.（状态）2）表示过去经常性或习惯性发生的动作。eg.Heusuallygotupat6:30lastyear.标志词：①yesterday及相关短语昨天上午/下午/晚上yesterdaymorning/afternoon/evening②“last+时间状语”构成的短语昨晚/上个月/去年春天/去年lastnight/month/spring/year③“一段时间+ago”组成的短语三天/四年以前④“介词+过去时间名词”组成的短语在1999年在2010年12月25号上午onthemorningofDecember25th,2010threedaysago/fouryearsagoin1999一般时态的句型转换:肯定句否定句一般疑问句及回答动词be一般现在时一般过去时Heisadoctor.Hewasadoctor.Isheadoctor?Washeadoctor?Yes,heis./No,heisn't.Yes,hewas./No,hewasn't.Heisn'tadoctor.Hewasn'tadoctor.(am,is,are)(was,were）Hecanplaysoccer.情态动词一般现在时一般过去时Hecouldplaysoccer.Hecan'tplaysoccer.Hecouldn'tplaysoccer.Canheplaysoccer?Couldheplaysoccer?Yes,hecan./No,hecan't.Yes,hecould./No,hecould't.(can)(could）行为动词一般现在时一般过去时Heworkshere.Heworkedhere.Doesheworkhere?Didheworkhere?Yes,hedoes./No,hedoesn't.Yes,hedid./No,hedidn't.Hedoesn’tworkhere.Hedidn'tworkhere.(原形/三单)(过去式)一般现在时中，实义动词的用法：主语是第一、二人称或第三人称复数时，谓语动词用原形；否定句：在谓语动词前don’t；一般疑问句：从原形中提出do至句首；主语是第三人称单数时，谓语动词用第三人称单数形式(+s/es)；否定句：在三单前加doesn’t，三单变原形；一般疑问句：从三单中提出does至句首，三单变原形。动词三单的变化：1、一般动词后加s，如：plays,works,makes2、以s,x,ch,sh,(o)结尾，后加es.如：watches,goes3、辅音字母+y结尾的单词,去y,加ies,如：worries,studies一般过去时中，实义动词的用法：主语不论人称，谓语动词一律用过去式；否定句：在过去式前加didn’t,过去式变原形；一般疑问句：从过去式中提出did至句首,过去式变原形；变化规则例词一般在词尾加-edplay→played以e结尾的，只加--dlike→likedlove→loved以辅音字母+y结尾的，变y为i,再加-edstudy→studiedcarry→carried以一个辅音字母结尾的重读闭音节，先双写这个辅音字母，再加-edstop→stoppedplan→plannedTheSimplePresentTense一般现在时TheSimplePastTense一般过去时用法例句1.现在的状态2.经常的或习惯性的动作1.过去某个时间存在的状态2.过去经常或反复发生的动作3.过去某个时间发生的动作Igetupat6:00everyday.Hegoestoschoolonfoot.Hisbrotherisillnow.Igotupat6:30yesterday.Hewenttoschoolbybikelastyear.Hisbrotherwasillyesterday.含有ＢＥ动词的句型一般过去时表示过去时间内某人某物存在的状态，性质等．eg:Iwasateacherlastyear.Shewasasingerlastyear.Theywerehappylastyear.一般现在时表示某人某物现在的状态，性质等．eg:Iamateachernow.Sheisasinger.Theyarehappy.（用lastyear改写）含实义动词的句型(主语是第一，二人称及第三人称复数）一般现在时用来表示习惯性，经常性发生的动作．eg:Igotoworkbybuseveryday.YouwatchTVeverynight.Weplaybasketballonweekends.Theyhavelessonseverymorning.主语＋动词原形＋其他．一般过去时用来表示在过去时间里发生的动作．eg:Iwenttoworkbybusyesterday.YouwatchedTVlastnight.Weplayedbasketballlastweekend.Theyhadlessonstwodaysago.主语＋动词过去式＋其他．主语是第三人称单数（肯定句）Hegoestoworkbybuseveryday.ShewatchesTVeverynight.LiMingplaysbasketballonweekends.Itsnowseverywinter.主语＋动词三单＋其他．Hewenttoworkbybusyesterday.ShewatchedTVlastnight.LiMingplayedbasketballthreedaysago.Itsnowedlastwinter.主语＋动词过去式＋其他．主语是第一，二人称及第三人称复数（否定句）Idonotgotoworkbybuseveryday.YoudonotwatchTVeverynight.Wedonotplaybasketballonweekends.Theydonothavelessonseverymorning.主语＋do＋not+动词原形+其他Ididnotgotoworkbybusyesterday.YoudidnotwatchTVlastnight.Wedidnotplaybasketballlastweekend.Theydidnothavelessonstwodaysago.主语＋did+not+动词原形＋其他主语是第三人称单数（否定句）Hedoesnotgotoworkbybuseveryday.ShedoesnotwatchTVeverynight.LiMingdoesnotplaybasketballonweekends.Itdoesnotsnoweverywinter.主语＋does＋not+动词原形+其他Hedidnotgotoworkbybusyesterday.ShedidnotwatchTVlastnight.LiMingdidnotplaybasketball3daysago.Itdidnotsnowlastwinter.主语＋did＋not+动词原形+其他1.IspeakEnglish.2.Welikemaths.3.TheywentswimminglastSunday.4.Hegotupveryearlythismorning.5.Thepandaeatsbamboo.将下列句子改成否定句、一般疑问句并回答：Idon’tspeakEnglish.DoyouspeakEnglish?Yes,Ido/No,Idon’t.Wedon’tlikemaths.Doyoulikemaths?Yes,wedo/No,wedon’t.Theydidn’tgoswimminglastSunday.DidtheygoswimminglastSunday?Yes,theydid.Hedidn’tgetupveryearlythismorning.Didhegetupveryearlythismorning?No,hedidn’t.Thepandadoesn’teatbamboo.Doesthepandaeatbamboo?Yes,itdoes/No,itdoesn’t.时态现在进行时：一般现在时：一般过去时：现在正在进行的动作经常或习惯性的动作或存在的状态。过去某个时间或时间段发生的动作或存在的状态。(ThePresentContinuousTense)(TheSimplePresentTense)(TheSimplePastTense)各时态常用的信息词现在进行时：一般现在时:一般过去时:now,Look!Listen!atthistimeWhereis…?Don’ttalk!It’s8:00am.always,usually,often,sometimes,seldom,never,everyday,every…,threetimesadaylastnight,last…,twodaysago,…ago,in1999,in+过去的年份,justnow=amomentago,yesterday,yesterdaymorningDo…Does…Did…改一般疑问句的方法：①首先看有无be动词，如果有，将be动词提至句首。②如果没有be动词，看原句的动词形式来决定提出助动词do/does/did,并且行为动词要变为原形。V-原形V-s/esV-ed(过去式)+动词原形…?改否定句的方法：①首先看有无be动词，如果有，在be动词后面加not.②如果没有be动词，看原句的动词形式来决定前面加助动词do/does/did,并在助动词后加not,并且行为动词要还原。主语+don’t/doesn’t/didn’t+动词原形现在分词的构成：动词第三人称单数的构成：过去式的构成：①直接加-ing.②以不发音的e结尾，去e加-ing.③重读辅元辅，双写尾字母加-ing.①直接加-s.②以s,x,ch,sh,o结尾加-es.③以“辅音+y“结尾变y为i再加-es.①直接加-ed.②以e结尾只加d.③重读辅元辅，双写尾字母再加-ed.④以“辅音+y”结尾变y为i再加-ed.对比时态动词形式否定句一般问句现在进行时一般现在时一般过去时表格对比学习be+v-ing(现在分词）在be后加上notBe提到句首V-原形V-三单在行为v.前借用do,does后加not，行为动词还原Do,Does提到句首，行为动词还原V-ed(过去式）在行为v.前借用did后加not，行为动词还原Did提到句首，行为动词还原判断下列信息词是属于哪种时态lastnightnoweverydayLook!yesterdayof