2-现在完成时结构

1.现在完成的概念和用法2.现在完成时的结构3.现在完成时过去分词的构成4.现在完成时中延续性动词的使用5.现在完成时与过去时的区别6.现在完成时的特殊用法 肯定式否定式I/You/We/They have finished the work.He/She/It has finished the work. I/You/We/They have not finished the work.He/She/It has not finished the work.构成：have(助动词) + p.p has(第三人称单数助动词) + p.p 疑问式回答Have I/you finished the work?Has he/she finished the work? Yes, you/I have.No, you/I havent.Yes, he/she has.No, he/she hasnt.have not 常缩略为 havent。has not 常缩略为 hasnt。 特殊疑问句回答How many times have you been to Beijing?How long have you had it? I have been there twice.I have had it for three years. 现在完成时句式：1.肯定句： 主语 + have / has + 过去分词 (+ 其他)2. 否定句： 主语 + have / has + not + 过去 分词(+ 其他)3. 一般疑问句： have/ has + 主语 + 过去分词(+ 其他) 4. 特殊疑问句：1) 特殊疑问词 (不是句子主语) + have / has + 主语+过去分词 (+ 其他)2) 特殊疑问词(是句子主语)+have / has+ 过去分词(+ 其他) 按要求完成下列各题：1.He has been to Paris.(改为否定句) _.2.They have been to Beijing. (对划线提问) _?3.My father has been to the nature museum. (改为一般疑问句) _ _?He hasnt been to Paris.Where have they beenHas your father been to the nature museum 按要求完成下列各题：4.Have you been to the film museum?(作出肯定和否定回答) _.5.Mike went to Hong K ong in 2008 and 2010. (改为同义句) _.Yes, I have. No, I haventMike has been to Hong K ong twice