I have arrived here since 3 years ago.arrive是瞬间动词,since 3 years ago是表示瞬时还是延续的时间?

i have just arrived here 句中arrived 是什么词性 i have arrived home 还是i have arrived at home --i am sorry to have kept you waiting long ---never mind .i (-----)here for only a few minutesa have been b have come c have arrived d waited Have you been here for a long time?No,I ________here just now.A.have arrived B.arrived in C.arrived 顺便说一下我在学现在完成时 还有理由 为什么啊··· sorry to keep you waiting.it doesn't matter.i _ here for only 5 minttes.A,have arrivedB,have beenC,arrived D,have been away from I （）here for only a few minutesA have been B have come C have arrived D waited我也刚到一会 i was a bit nervous before i arrived here I should have already arrived HK yesterday . I have arrived in Beijing.一般疑问句 ——How long have you been here in Sydney ——___last Wednesday,I ___two days before youA.Since ; arrived B.On ; have been C.Since ; went D.On ; have arrived ,为什么? We ____ here two hours ago.We ____ here for two hours.A.have arrived;have beenB.have come;have beenC.came;have come D.arrived;have been If only i ____in time!A、arrive B、arrived C、have arrived D、had arrived you can have a party before I have arrived对不对还是把have arrived 改成arrive i'm sorry to have kept you waiting long.never mind.I（ ）here for only a fewminutes.A、have been B、have come C、have arrived D、waited i am glad to see you.when ()you()here.A.did; arrive B.will ; arrive C.have;arrived D.are ; arriving I have arrived here since 3 years ago.arrive是瞬间动词,since 3 years ago是表示瞬时还是延续的时间? I have just arrived in China为什么要加 have i have just arrived in china为什么加个have