英和和英

be unable

the state of a task of being impossible

I have nothing to do.

To do my utmost, I can not do it

Haven't done it

not capable of being obtained

Haven't done it

made impossible

That is not to be done―impossible―impracticable.

He is nothing of a scholar―no scholar （at all）.

Don't do it

to do one no good―do one harm―be harmful to one―be injurious to one―make against one's interests

He is good for nothing.

Things I will never achieve

He is not much of a scholar―not much of a one.

possibility of matter (be impossible, be an impossibility)

the feeling of being impatient

Can't do it well

an inability to stay awake

I can't do it yet.

the impossible

to be unreliable―untrustworthy―unauthentic―deceptive―delusive―treacherous

I can't do anything.

I can do nothing

incapable of being transferred

not able to be ascertained

the state or condition of being unconvinced

not done

incapable of being reversed

an improbable event