彼は以前にもまして勉強しようと決めたのです。の英語

He decided to study harder.

He began to study in earnest.

He started to study in (good) earnest.

He started to study in earnest.

He studies much harder than before.

He has ceased to work hard as he used to.

He is always at work, and goes on improving.

He has worked his way up to―won his way up to―his present position by dint of industry.

He wanted to make the most of his chance to learn.

He neglected his studies and did nothing but enjoy himself.

He applied himself to his study.

He has risen by dint of perseverance―（他動詞構文にすれば）―Simple perseverance has raised him in the world.

He studied like one possessed.

He concentrated on his studies.

It was important for him to know who he was before he could concentrate on studying.

He made up his mind to study abroad.

He looked upon any time not spent in study as so much lost time.

He began to study with a will.

He doesn't study as hard as he used to.

He's coming along nicely with his studies.

He studied very hard.

He works by fits and starts―by catches―by snatches―He is a spasmodic worker.

I found him at his books.

He worked very hard, but could make little progress.

He has failed in the examination owing to his idleness―in consequence of his idleness.

He made up his mind to try again.

He will do anything but work

Work is the last thing he will do.

He made up his mind to try again.

He studied until two in the morning before the test.