What would you like的語境通常是給幾個選擇,讓對方去選,例如
Water or juice, what would you like?
Would you like是一般疑問句,後面跟一個選項。例如
Would you like some water?
也可以表示邀請,例如
Would you like to go with me?
what would you的意思是:你會怎樣?後面可直接加動詞原形;would you like的意思是:你想要,後面加名詞。