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Heisfull.Hehashadabigbreakfast.1.过去某一时间点发生的动作对现在产生影响。功能：IIhavelearnedhavelearnedEnglishfortenyearsEnglishfortenyears2.过去某一时间点发生的动作持续到现在或还将持续下去。基本结构基本结构have/has+done助动词（可以帮助构成肯定、疑问和否定句）一、基本结构：主语+助动词have/has+动词的过去分词肯：e.gI(You)havestudied.He(She,It)hasstudied.We(You,They)havestudied.否：主语+助动词haven’t+动词的过去分词hasn’tI(You)havenot/haven’tstudied.He(She,It)hasnot/hasn’tstudied.We(You,They)havenot/haven’tstudied.havenot=haven’thasnot=hasn’t疑问助动词Have+主语+动词的过去分词…?Hase.g:1)Haveyoustudied?Yes,Ihave./No,Ihaven’t.2)Hashe(she,it)studied?Yes,he(she,it)has.／No,he(she,it)hasn’t.3)Haveyou(they)studied?Yes,we(they)have.No,we(they)haven’t.回答:Yes,主语+have/has.No,主语+haven’t/hasn’t.We_______only____________100treessofar.(answer)KeyKeywordswordshaveyeteverneversinceforjustalreadysofar到目前为止planted一段时间的表达方法有两种:1）for+一段时间eg:I____________English______________.我学英语已经两年了。forayearfortwoweeksforthreeyearsfortwoyearshavestudied过去的某一时刻一般过去时态的时间状语从句2)since+They__________inBeijing____________.他们自１９８０年就一直住在北京。We’veknowneachother_____we______children.我们从小就认识。sincelastweek,since3yearsagosincenine,since2008…sinceyoucametoChinasinceyougothomesince1980havelivedsincewere