Some examples of word usage: had better
1. You had better study for the exam if you want to pass.
試験に合格したいなら、勉強した方がいいよ。
2. We had better leave soon if we want to avoid traffic.
渋滞を避けたいなら、早く出発した方がいいね。
3. She had better apologize for her mistake before it's too late.
彼女は遅くなる前に、彼女の間違いを謝らないといけない。
4. They had better finish their project by the deadline or there will be consequences.
締め切りまでにプロジェクトを終わらせないと、結果が出るだろう。
5. He had better call his parents to let them know he will be staying out late.
彼は遅くまで外出することを両親に知らせるために電話した方がいい。
6. You had better wear a coat, it's going to be cold outside.
外は寒いから、コートを着た方がいいよ。