into是介词，后面接动词要用ing；
turn into变成、转入、变为、变成
She\'s turning into a proper little madam.
她正在变成一个十足的少奶奶。
Hydrogen might be depleted with some of it turning into helium.
氢可能被耗尽，一部分变为氦。
In Spain and Ireland boom also seems to be turning into bust.
西班牙和爱尔兰的繁荣也似乎正在转入暴跌。
