控えめに提案するときは、動詞の前に Maybe you could や You might want to を置くか、-ing 形の前に Have you considered を置きます。Perhaps を添えると、どんな提案もより柔らかい響きになります。
控えめな提案
Maybe you could — Maybe you could go to bed earlier.
You might want to — You might want to try tea instead.
Have you considered — Have you considered taking a break?
やってみよう: Amina: I feel tired all the time. Hiroshi: ___ going to bed earlier? Choose the gentle suggestion that fits before the -ing word. (Have you considered / You'd better / You must) 答え: Have you considered — Have you considered は控えめな提案の表現で、後ろに going などの -ing 形が続きます。You'd better と You must はどちらも強い助言で後ろに動詞の原形が続くため、ここには入りません。
強いアドバイス
アドバイスが重要なときは、問題が起きることを警告する You'd better や、強く勧める You must を使います。
You'd better — You'd better see a doctor.
You must — You must take care of yourself.
やってみよう: Sofia: The pain has not stopped for a week. Diego: ___ see a doctor. This is serious. Choose the strong advice for a serious problem. (You'd better / Maybe you could / Have you considered) 答え: You'd better — You'd better は深刻なトラブルを警告する強い表現なので、この場面にぴったりです。Maybe you could や Have you considered はどちらも控えめな提案なので、深刻な状況には少し弱すぎます。