to try to ...; to be about to do ...
to decide to ...
to take as; to treat as; to regard as
to use for
to suppose that (such) is the case; to assume
to decide that; to think that
to make into; to change into
to feel (e.g. after sound symbolism or psychological experience word); to look; to feel like
to intend; to have the intention
彼は逃げようとした。
He tried to escape.
彼女は立ち上がろうとしている。
She is trying to stand up.
ドアを開けようとすれば簡単にできる。
If you try to open the door, it can be done easily.