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1、 现在完成时的构成及用法阶段性总结导学案Unit9 Have you ever been to a space museum (Self Check)主备教师：何金梅 时间20015-6-9【学习目标】现在完成时的构成及用法【教学重点】1.现在完成时的构成2.现在完成时的用法3.规则动词的过去分词的构成4.不规则动词的过去分词的构成【学习方法】独学、对学、群学、展示【学习过程】复习导入例1;T: Have you ever been to Beijing?Ss: Yes, I have./No, I havent导入总结现在完成时的用法1：过去发生的事或存在的状态对现在造成的影响常与alrea
2、dy yet ever never等连用。例2：1 I have known her for 30 years.2 She has lived here for 10 years.3 He has taught us since 20013.导入总结现在完成时的用法2:现在完成时还可以表示过去某一时间开始一直持续到现在（包括“现在”在内）的动作或状态，常与“since+时间点”“for+一段时间”连用导入总结现在完成时的构成：一，肯定式：主语+助动词（have/has）+v-ed (动词的过去分词)1、I have known her for 30 years.2 、She has lived
3、 here for 10 years.3、He has taught us since 20013.二、否定式：主语+have/has +not+动词的过去分词(陈述句变成否定句只需在have/has的后面加not构成)1、I havent (have not) known her 2 、She hasnt lived here for 10 years.3、He hasnt taught us since 20013.三、一般疑问句的形式：助动词Have/has+主语+v-ed (动词的过去分词)?（陈述句变成一般疑问句只需把have/has提到主语的前面，注意大小写）1、Have you
4、had your lunch yet?2、Have you ever been to shanghai?3 、Has she ever seen a tiger?四、规则动词过去分词和不规则动词过去分词的构成（一）规则动词过去分词的构成与动词过去式的构成相同1、一般情况下直接在动词后+ed（look-looked call-called）2、不发音的e结尾只+d(like-liked live-lived)3、辅音字母加y结尾的改y为i再+ed(carry-carried hurry-hurried)4、重读闭音节末尾只有一个辅音的先双写后面的辅音字母再+ed (stop-stopped dr
5、op-dropped )（二）不规则动词过去分词的构成看136-137页的不规则动词表，只能多记多背五、自我检测一、把下列句子进行句型转换1，I have already seen this film (改成一般疑问句).2 She has lived here for 10 years.（改成否定句）3、They have never been to school (改成肯定句)4 Have you ever been to Beijing? (改成陈述句句)5、Have they had lunch ?(分别作肯定和否定回答)二、写出下列动词的过去式和过去分词be(am is are) do/does invent dependfear hatemake likestop plancarry hurrycut shut