You should be straight with him.
彼に隠し事をすべきではない
You should do it immediately.
それをすぐになさってください（◆had betterより弱く丁寧）
You should have been able to read the text over before the lecture.
講義の前にテキストをしっかり読んでおくことができたはずだ
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 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 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 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('re) the man!
すごい！，やったね！
You were not difficult to find.
あなたはすぐに見つかりました
You will always find a good friend in me.
いつでも力になってあげます
