I arrived by train a moment ago.的同义句

I arrived by train a moment ago.的同义句 这句句子语法对吗I've arrived by train a moment ago. 英语句子结构改写：I arrived by train a moment ago. He had a stomachache a moment ago的同义句 We arrived at Mount by train.（改为同义句） 这两句英语的区别?I arrived by train.I've arrived by train. Tom_for shanghai by train a moment ago.a.left b.leaves c.lef The earphones were there a moment ago.同义句怎么说? The boy was there a moment ago.(改成同义句) ‘I’ve just arrived by train中的 the train arrived just now 同义句 the rain stopped a momenr ago(同义句） It ____ ____ a moment ago