But for his help, we should have failed.

如果没有他的帮助，我们就失败了。

youdao

We were disappointed that he should have failed us in that way.

他这样辜负了我们，我们深感失望。

youdao

We were disappointed that he should have failed us in that way.

他这样辜负了我们，我们深感失望。

youdao