变成

fèi shuǐ huì biàn chéng shuǐ zhēng qì

沸水会变成水蒸气？

Will boiling water change into water vapour?

tā xiǎng biàn chéng yī gè měi rén yú

她想变成一个美人鱼。

She wants to become a mermaid.

yǔ shuǐ yǐ jiāng zhè piàn cǎo dì biàn chéng le zhǎo zé

雨水已将这片草地变成了沼泽。

Rain had turned the grass into a quagmire.