1、现在完成时现在完成时知识点回顾：知识点回顾：动词的几种形式：动词的几种形式：原形单三现在分词过去式过去分词dodoesdoingdiddone根据动词的形式判断时态：根据动词的形式判断时态：dodoesdoingdiddone一般现在时一般现在时现在进行时现在进行时一般过去时一般过去时现在完成时现在完成时对现在产生的影响，造成的结果动作发生在过去现在完成时：现在完成时：现在完成时：现在完成时：have/has+done现在完成时：现在完成时：I have already done my homework.一般过去时：一般过去时：I did my homework just now.I did
2、my homework just now.I have already done my homework.言外之意字面意思I have already done my homework.1.说话前已经完成了，现在产生了结果说话前已经完成了，现在产生了结果I have lived here since 2000.2.过去开始的某一动作或状态，持续过去开始的某一动作或状态，持续到现在。常于到现在。常于since,for连用。连用。I have lived here 22 years.2.过去开始的某一动作或状态，持续过去开始的某一动作或状态，持续到现在。常于到现在。常于since,for连用。连用
3、。I have been to Beijing three times.3.过去经历过的事情I Beijing three times.My father Beijing,he will be back next week.have/has been to:去过，已回 have/has gone to：去了，未回用所给动词的正确形式填空1.Ken is a businessman.He sells car parts.He (own)his own business.has owned用所给动词的正确形式填空2.Janet and Sam (have)their dog Fido for three years.has had 用所给动词的正确形式填空3.Tom (go)to see his grandmother last weekend.went用所给动词的正确形式填空4.I (play)football with my friends yesterday.played
