You should next take into account the color scheme.
次には配色を考慮しなくてはならない
You should really see the doctor before it's too late.
手遅れになる前に医者に見てもらうことを本気で忠告するよ
You should report on your progress in two weeks.
２週間の進捗しんちょくを報告しなさい
You should take a walk every day and, moreover, stop drinking.
毎日散歩してさらに酒もやめるべきです（◆andの強調）
You should take care not to catch cold.
風邪をひかないように
You should wait until you see him next.
次回彼に会うまで待てば
You shouldn't have come here to begin with.
そもそもここへ来てはいけなかったのです
You shouldn't hit children on the head.
子どもの頭をたたいてはいけない
You shouldn't meddle in other people's affairs.
他人のことにちょっかいを出すのはよせ
You shouldn't think like that.
そんな風に考えるべきじゃない
