1. 如果已经赢得比赛,可以说:He won (the race) by a wide margin.如果是比赛的时事报道,可以说:He is pulling away from the runner-up. 或He has distanced himself from the runner-up/ the other runners. 在学习中拉开差距,也可以用pull away from 或 distance oneself from如:He is pulling away from his classmates./ He has distanced himself from his classmates. 2. There is a big/small gap between Jack and him. gap表示差距
常用形容词如下:很大的差异:big/major/important/significant/marked difference 很小的差异:small/minor/subtle difference 以下是部分形容词的详细分辨:subtle difference (=not obvious) 差异不明显marked difference (=very noticeable) 差异明显there's no difference (=they are the same) 没差别,一样there's very little difference (=they are very similar) 差别很小there's a world of difference (=they are very different) 差别很大例句:There was a marked difference in his behavior toward me.There was certainly no difference between them in terms of intelligence.There is very little difference between the parties on green issues.There's a world of difference between us.希望有帮助到你(∩_∩)