这句句子语法对吗I've arrived by train a moment ago.

这句句子语法对吗I've arrived by train a moment ago. i've been here before 这句是什么语法啊? 下面这句英文句子语法上有错误吗?求改正now I wanna tell u guys that I've got a english name it's 看看这句句子语法对吗?i do my homework begin 3o‘clock不对的话，正确的写出来 I will wating for you这句语法对吗? i knew you have been hard 这句语法对吗? since i've got nothing to say这句语法对么... hasn't arrived yet 这句的语法讲解 i want to find out,only belong to my dependence.这句句子语法对吗i want to find out the dependence only belonging to me. ‘I’ve just arrived by train中的 I know I can~这句英语的语法,格式都对吗?还有请翻译一下~ I have been there.这句句子对吗?为什么? 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. 请问这句英语作文中的句子语法对吗The tigers are in extreme danger. i quite like it 这个句子语法对吗可以这么说吗,语法对吗 这句语法对吗How much does it discount?这个句子语法正确吗?顺便帮我翻译下谢谢! i quite like it 这个句子语法对吗 naughty of boy这句语法对吗