2nd一般现在时态和一般将来时态.doc

初三语法串讲之时态专练****本课学****目标:一般现在时态,一般将来时态热身活动:你能准确读出一下句子并辨认出时态吗?I'?Doyouwanttowatchagameshow?Howdoyoumakeabanaanacake?5fllhelptocleanupthecityparks・Whatwereyoudoingwhentherainstormcame?HaveyoureadTreasureIslandyet?Howdoyougettoschool?:一般现在时态一、含义:表示经常、:・、吋间标志语(吋间状语)always,often,usually,everyday,sometimes等表示时间的词。三、 构成行为动词在一般现在时中的用法:一般人称的动词用原形.(V■原)但单数第三人称做主语吋动词词尾发生变化:即•动词词尾加・s;或・・es(即主语为三单用V-s,V-es)即:主语+V原/V-s,V-es+其他说明:三单时动词的变化(V-s,V-es的变化))一般情况下,直接加-,plays,rains,sees)以sh,ch,s,x或o结尾的词后加-,teaches,fixes,does,goes)以辅音字母加-y结尾的,先把y改成丫,再加-es注意:动词加-•在[p][t][k][f]等清辅音后,发清辅音/s/,works,likes,hates,laughs2•在浊辅咅和元咅后,发浊辅咅/z/,cleans,plays3•在[s][z][J][tJ后,发/iz/rises,wishes,teaches,urges4•在[t][d]后,发/ts//dz/,sets,needs其他情况卜•发[z]eg・plans,cries,shows四、 句式变换(三种情况)情况一:肯定句::Heisnot(isn't):Isheateacher?肯定/否定冋答:Yes,heis,Nozheisn':Whatishe?总结:有be动词,在be动词身上做文章情况二:肯定句::Idonot(don't):Doyouworksixdaysaweek?肯定/否定回答:Yes,,Idon':Howlongdoyouworkaweek?总结:主语是一般人称(三单除外),动词是行为动词,肯定句动词用原形,变否定、:主语是一般人称(三单除外),动词是行为动词,肯定句动词用V-s,V-es,变否定、疑问句时加助动词does,:肯