He lacks the ability of doing the work.

他没有完成这项工作的能力。

youdao

You may doubt your ability to do the things you are normally capable of doing.

你可能会怀疑自己的办事能力，而这些事情都是你平常能搞定的。

youdao

I admire his ability of doing the work quickly.

我羡慕他工作做得快。

youdao

I admire his ability of doing the work quickly.

我羡慕他工作做得快。

youdao