Has the post arrived yet?It may have arrived.为什么提问用has,回答用的have?

Has the post arrived yet?It may have arrived.为什么提问用has,回答用的have? the man_i told you about has arrived. The post has 11 meters high Has the train .Has the train （ A arrived B reachedC got toD arrived in理由 The train has arrived.这句中has起到了什么作用? was told that her father ____to the post office when I arrived at her house.答案分别是A.just wentB.has just gonec.had just goned.had just been going求句意 求原因 the chairman has informed us that he_a few minuteslater after the meeting beginsA has arrived B should arrived C could arrived D may arrived 求详解 The train has already arrived如何改为否定句 The apaceship has arrived ______the planet already.介词 The train has arrived here.it arrived ten mintes ago 合拼句 the bus has arrived here.it arrived ten minutes ago 把两个句子链接在一起 Has the train ——--yet A got to B reached C arrived D arrived at The post has been reported about 100,000 times. the man ( )here for three dayshas left has come has been has arrived As soon as he __the post office,he put the letter into the post officeA reached B got C arrived D went to 说下原因. The moment he____,he realized he had forgotten some important papers.A arrived B had arrivedA arrived B had arrived C has arrived D arrives the moment he has arrived,标题句中he has arrived是作同位语还是定语修饰moment? post the