準(zhǔn)確的句子該是 The father wants his daughter 【to be taught 】the piano.
也就是 The father wants his daughter 【to learn】the piano.
若是動(dòng)詞want的用法清晰了,此題就好理解了 簡(jiǎn)單說幾句吧：
1.want + 名詞/代詞 表達(dá)“想要什么東西”
His daughter wants a piano.他女兒想要個(gè)鋼琴
2.want to + 動(dòng)詞原形 表達(dá)“想要做什么事兒”
His daughter wants to play the piano.他女兒想要彈鋼琴.
3.want sb to do sth 表達(dá)“想讓某人做某事”
He wants his daughter to learn the piano.他想讓女兒學(xué)鋼琴.
這種類型還可以做個(gè)變換 即：want sb to be done 表達(dá) “想讓某人被.”
題中的句子就可以做例子：The father wants his daughter 【to be taught 】the piano.
這個(gè)爹想讓他家的丫頭“被別人教點(diǎn)鋼琴”----把這意思捋直了就還是“讓小丫頭學(xué)鋼琴”.
4.want sth doing 表達(dá)“想被.” 此時(shí),want的主語通常是“物” 如：
My hair wants cutting.我該理發(fā)了.-------- 即 我的頭發(fā)念叨著“被剪”了
His watch wanted reparing.他的表該修了----------- 即 他的表嘀咕著“被修”了