He has been studying for two hours.とは 意味・読み方・使い方

He has been studying two hours ago.

He has been studying for two hours.

He studied until two in the morning before the test.

I have been studying for two hours.

Have you been studying for two hours?

He was at his books all day.

He spent all day in study.

He is a swot and studies for six hours every day.

He is a diligent student. He studies three hours every day.

He applied himself to his study.

He studies day and night.

He was a hard worker from his youth.

He spends very little time on his studies.

I studied for perhaps two hours.

I found him at his books.

His commute is 2 hours long.

He's a model of industry.

He works as hard as ever.

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 plugged away at his lessons.

He works as hard as before.

I found him working [doing his lessons].

He worked while the others were playing.

He's diligent in his studies.

It took him two hours to finish his homework.

He concentrated on his studies.

He is an industrious student.

He has been playing games since 2 hours ago.

He tried to study all night, but in vain.

Two solid hours of work.