翻译成英语：想做某事除非从某人尸体跨过。

you can do that over my dead body
over one's dead body:除非我死

句子意思就是：除非我死你才能那么做。也就是指除非从我的尸体上跨过去。

这种说法是比较地道的用法，直接翻译跨过+尸体，显然就比较恐怖了...

放心用！！

If you want to do so unless you step over from my corpse .

你如果想这么做，除非你从我的尸体上跨过。

If sb. want to do so, unless sb. step over from one's corpse

You would like to do so over my dead body .
我是从事英语的，乐意为你解答。

I would like to do so unless the body from the cross on the past

If you wanna do this unless I become a corpse

I would like to do so unless the body from the cross on the past