The train has arrived.这句中has起到了什么作用?

Has the train (arrive) yet?用什么形式呀? 问一个英语词汇题目-Has the train _____(arrive) yet?-Yes,it arrived ten minutes ago. The train for Beijing has already arrived. 现在完成时has 有实意吗?谓语=arrive=动词?! After The Train Has what time ( ) the train ) (arrive) in Shanghai. When are the train arriving还是arrive The train will arrive ___Nanjing__tow this afterroom. What time does the train arrive?为什么句子中用arrive? What time does the train arrive? 为什么句子中用arrive? 火车来了吗?能翻译成Did the train arrive?吗?还是只能翻译为Has the train arrived? WHY has the train from tibet ___?A.arrive B.reached C.got to D.arrived in要理由 Has the train arrived yet?Yes,It______ (arrive) ten minutes ago.拿不准这里是用过去式?还是完成式? reach和arrive哪个可以放句末例如：Look!The train has ___________A.got B.got to C.arrived D.reached when will the train arrive和when does the train arrive一样吗 理由 When do you think______?A.the train will arrarrive.B.will the train arrive C.does the train arrive D.the train does arrive When will the train ___?A arrive B arrive at C arrive in D reach when will the train _____?A.arrive B.arrive at C.reach D.arrive in Could you tell me when___?——At half past ten.In a few minutes.A will the train arrive B:the train has arrived C:the train will arrive D:the train arrives 选哪个呢?感觉好像C D都对一样.注 ：when 有主将从现 所以才疑惑