1.我去过北京两次。I________________Beijingtwice.2.旅客已经上船了吗？________thepassengers______onboardyet?3.这个故事如何结束？Howdidthestory_____________?hasbeentoHaveCompletethesentences.endupgone4.昨天他没有去那儿，我也没去。Hedidn’tgothereyesterday.______________.5.你听说过太空站吗？Haveyouever________________thespacestation?Meneitherheardof/about•Haveyoueverbeentoasciencemuseum?Yes,I’vebeentoasciencemuseum./No,I’veneverbeentoasciencemuseum.•Haveyouevervisitedthespacemuseum?Yes,Ihave.Iwenttherelastyear./No,Ihaven’t.•I’vebeentotheartmuseummanytimes.Me,too.AndI’vealsovisitedthenaturemuseum.I’veneverbeentoawaterpark.Meneither.肯定式否定式I/You/We/Theyhavefinishedthework.He/She/Ithasfinishedthework.I/You/We/Theyhavenotfinishedthework.He/She/Ithasnotfinishedthework.构成：have(助动词)+p.phas(第三人称单数助动词)+p.p疑问式回答HaveI/youfinishedthework?Hashe/shefinishedthework?Yes,you/Ihave.No,you/Ihaven’t.Yes,he/shehas.No,he/shehasn’t.havenot常缩略为haven’t。hasnot常缩略为hasn’t。Haveyouhadyourlunchyet?Yes,Ihave.Ihavejusthadit.(现在我不饿了)表示过去发生或已经完成的动作对现在造成的影响或结果。IhavealreadytaughthimsomeEnglish.Johnhasneverbeentothespacemuseum.Myboyhasjuststartedjuniorhighschool.现在完成时常与时间副词already,never,ever,just,before,yet等连用。ever意为“曾经”，用于疑问句或否定句中，放在助动词与过去分词之间。e.g.HaveyoueverbeentoHongKong?你曾去过香港吗？Ihaven’teverspokentoher.我未曾和她说过话。never意为“从来没有”常与before连用，多放在助动词与过去分词之间。e.g.Ihavenevertravelledbyplanebefore.我以前从来没有乘飞机旅行过。比较：HehasbeentoBeijing.他曾去过北京。（人已回来，可能在这儿）HehasgonetoBeijing.他已经去北京了。（人已走，不在这儿）have/hasbeen(to)表示“曾经到过某地”，说话时此人不在那里，已经回来。侧重指经历。have/hasgone(to)表示某人“已经去某地了”，说话时此人可能在路上或已到那里，反正不在这里。比较：Ihaveseenthefilm.我看过这部电影。(我了解这部电影的内容)Isawthefilmlastmonth.我上个月看了这部电影。(只说明上星期看了这部电影，不涉及现在的...
