语法现在完成时1.ppt

He is full .He has had a big breakfast.1.过去某一时间点发生的动作对现在产生影响过去某一时间点发生的动作对现在产生影响功能：功能：I I have learnedhave learned English for ten years English for ten years2.过去某一时间点发生的动作持续过去某一时间点发生的动作持续 到现在或还将到现在或还将持续下去持续下去基本结构基本结构基本结构基本结构have / has + done 助动词助动词 （可以帮助（可以帮助构成肯定、疑问和构成肯定、疑问和否定句）否定句）一、基本结构：一、基本结构：主语主语+助动词助动词have/has+动词的过去分词动词的过去分词肯：肯： e.gI (You) have　　studied.He (She, It) has studied.We(You,They) have studied.否：否： 主语主语+助动词助动词 haven’t+动词的过去分词动词的过去分词hasn’tI(You) have not/haven’t studied.He(She,It) has not/hasn’t studied.We(You,They) have not/ haven’t studied.have not = haven’thas not = hasn’t疑疑问问助动词助动词 Have+主语主语+动词的过去分词动词的过去分词…?Hase.g: 1) Have you studied? Yes, I have./No, I haven’t. 2) Has he (she,it) studied?　　 Yes,he(she,it) has.／No,he(she,it) hasn’t. 3) Have you (they) studied? Yes, we (they) have. No, we (they) haven’t.回答回答:Yes, 主语主语+ have/has.No,主语主语+ haven’t/ hasn’t.We _______ only ____________ 100 trees so far. (answer ) Key Key wordswords have yet ever never since for just already so far 到目前为止到目前为止planted 一段时间的表达方法有两种一段时间的表达方法有两种:1）） for + 一段时间一段时间eg:I ____________English______________. 我学英语已经两年了。

我学英语已经两年了for a year for two weeks for three yearsfor two yearshave studied过去的某一时刻过去的某一时刻一般过去时态的时间状语从句一般过去时态的时间状语从句 2) since +They __________in Beijing____________. 他们自１９８０年就一直住在北京他们自１９８０年就一直住在北京We’ve known each other _____we ______children. 我们从小就认识我们从小就认识since last week, since 3 years ago since nine, since 2008 …since you came to Chinasince you got homesince 1980have livedsincewere。