I arrived by train a moment ago.的同义句

I arrived by train a moment ago.的同义句 ‘I’ve just arrived by train中的 这两句英语的区别?I arrived by train.I've arrived by train. 英语句子结构改写：I arrived by train a moment ago.可以改写成：I’ve arrived by train for a moment.若错,请指出. 这句句子语法对吗I've arrived by train a moment ago. 用完成时还是过去时?为什么?I arrived by train a moment ago和I have arrived by train a moment ago 哪句对?还是两句都对?为什么? i have just arrived by train.为什么有have.它起什么作用 I have just arrived by train这里为什么要用现在完成时呢 ‘I have just arrived by train,’she said.变成间接引语 i have arrived by train中的arrive 为什么用完成?而不用be there? i want to take a train to Beijing 为什么是take a train 不是by train? 新概念英语2第2课的句子结构是现在完成时吗将i arrived by train a moment ago改写成i have ---------------------have just arrived by train改写后的句子是have been形式,现在完成时吗?为什么要用现在完成时? 表状态情绪感觉精神活动的动词,不用现在完成时对吗～I have just arrived by train 这句话对吗 We arrived at Mount by train.（改为同义句） Today I'd like to go to work( ). A.take a train B.by a train C.on train D.by train求帮助, I went to there by a train.改错, Has the train .Has the train （ A arrived B reachedC got toD arrived in理由 'What a day!' I thought.'It's raining again.' Just then,the telephone rang" thought"不用think? It was my aunt Lucy.'I've just arrived by train,' she said.'I'm coming to see you.'为什么arrived用这个时态?