英语人教版九年级全册the present perfect Tense.doc

The Present Perfect Tense 教学目标1、 复习现在完成时的构成和两种基本用法。2、现在完成时与一般过去时的区别。 3、havebeento,havegoneto和havebeenin的用法。教学重点：现在完成时的两种基本用法。教学难点：1.现在完成时与一般过去时的区别。2.havebeento,havegoneto和havebeenin的用法.教学过程Step1Ask ss some questions that we learned last class.Step2Whats the Present Perfect Tense?The family has lived in this town for twenty years.I have known him since last December.He has studied English since he was 12 years old.Am I right in thinking that you have lived here all your life? Conclusion:现在完成时表示一个从过去某一刻开始延续到现在的动作或状态，这个动作或状态也许还会持续下去，常与for,since或一段时间连用。（现在完成时的未完成用法）Step3Sentence StructuresI have seen quite a lot of China. It has been very successful, so far.肯定句：主语 + have/has + 过去分词. We have not finished the work. (have not=havent) It has not been very successful yet. (has not=hasnt)否定句：主语 + have/has not + 过去分词. Have you collected any information about occupations? Has Tom left our town? Yes, he has. And how long has he been away? About two hours.疑问句:(疑问词)Have/Has + 主语 + 过去分词?Step4 Exercises: 按要求变化下列各句。1.She has listened to a piece of foreign music.（否定句）2.I have got something important to do.（一般疑问句）3.Have you ever traveled on a train? （否定回答）Step5Time Expressions with Present Perfect Tense already, yet, before(以前),ever, never, just(刚刚),for + 时间段 (持续)since + 时间点 (自从)sofar / uptonow (到目前为止).Step6already and yetalready常用于肯定句中或句末；yet常用于一般疑问句或否定句末。但表惊讶时already也可用于疑问句。e.g.1.Tomhasalreadyfinishedhiswork.2.Tomhasntfinishedhisworkyet.3.What!Haveyoualreadyfinishedit?for and since for “经历(时间段)” since “自从以来” for时间段 since时间段 ago since时间点 since从句Step7Continuous Verb OR Non-Continuous VerbC