With all the lesson preparation I have to do I work 12 hours a day.
加上必須的備課在內，我每天工作12個小時。
The accident taught me a lesson I'll never forget.
這次事故給了我一個終生難忘的教訓。
The accident taught me a lesson I'll never forget.
那事故給我的教訓永遠也不會忘記。
I've got a piano lesson later today.
今天晚些時候我有一堂鋼琴課。
The class settled down and she began the lesson.
全班安靜下來她便開始上課了。