You shall stay with us as long as you like.
好きなだけ泊まっていていいですよ
You shall want for nothing while you are with me.
私と一緒なら不自由はさせない
You sháll sign the contract.
契約書にサインしてもらおう
You should acquaint yourself with the new regulations.
新しい規則を知っておくべきだ
You should be candid with him about what happened.
何が起こったか，彼に包み隠さず話すべきだ
You should be straight with him.
彼に隠し事をすべきではない
You should bring an umbrella with you.
傘を持っていきなさい
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 feel mean for being so stingy.
そんなにけちけちして恥ずかしくないか
You should find somewhere to live.
どこか住む場所を見つけた方がいい
