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
You shut up!
黙れ
You simply mustn't do that.
そんなこと絶対にしてはだめ
You sound pretty sure of yourself.
自信満々の口ぶりだな
You sowed (the seeds of) doubt in my mind.
あなたは私の心に疑惑の種をまいた
You startled me!
驚かせやがって!