Wait until it happens to him—he'll soon change his tune.

等着瞧吧，到他遇上这事时，他很快就会改变调子了。

《牛津词典》

Change his tune.

它在改变曲调。

youdao

If James Fenimore Cooper were here today he would surely have to change his tune.

如果今天柯柏还在世的话，他就得改变他的论调了。

youdao

Rubio wouldn't be the first to change his tune.

CNN: A kinder, gentler, wiser Marco Rubio

But the president has to change his tune.

CNN: Democrats say Bush's comments helped bring downturn

The king had been ostracised by neighbouring India immediately after his putsch, and his change of tune came on his return from international conferences in China and Indonesia.

ECONOMIST: King Gyanendra courts approval