有两种情况: 1.It is different to do sth.必须有sth 译为:做某事是与众不同的 2.It is different to do it 其实这个只是把 sth.换成了it 而已 △这句虽然成立 但必须有上文 因为 it 是代词 连上文都没有 你又代替谁呢?句子就不成立了. 例: I help others.It is different to do it =.It is different to help others . 再问: 我说的It is different to do 后面是不跟it和sth的。 如: I have a lot of homework to do . 和 I have a lot of homework to do it . 哪一个是正确的? 再答: 额。。。追问审核过了、嘿嘿 明白了就好