授業の予習

preparing for class

→ 授業
phrase Rare #33,500
preparing for class Refers to studying or reviewing material before a class. 予習 means preparation in advance, especially for lessons or classes.
JA: 明日の授業の予習をしてから寝ます。
EN: I’ll prepare for tomorrow’s class before going to bed.

子供たちは授業の予習で忙しかった

The children were busy preparing for their lessons.

私は英語の授業の予習あまり時間をかけない

I don't spend much time preparing for my English classes.

トム明日の授業の予習しているらしい

Apparently, Tom is preparing for tomorrow's class.

私はなんとか明日の授業の予習を終えた

I somehow managed to finish preparing for tomorrow's class.