Was heißt »sich« auf Englisch?

Das Reflexivpronomen »sich« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Synonyme

Mary said that she would buy the flowers herself.
The gate opened all by itself.
Maria wants to buy herself a new washing machine.
Why did Tom kill himself?
She managed to elude the embarrassing situation that she found herself in.
Tom told Mary that he thought it wouldn't be good if she went there by herself.
Tom told Mary that she shouldn't go there by herself.
Why did Dan kill himself?
The octopus wrapped itself around its prey.
My sister does not think for herself.
He describes himself as a democratic socialist.
It is in self-limitation that a master first shows himself.
Mary pictured herself lying on a beach, sipping a piña colada.
He has financially ruined not only himself but his family.
Tom ended up going by himself.
The boy hurt himself with a knife.
Tom seldom talks about himself.
Tom cut himself.
I'm surprised Tom's still alive. I thought he would've drunk himself to death years ago.
Tom accidentally shot himself.