turn into 可以主动表示被动的,例如:Everything that King Midas touched turned into gold.迈达斯国王用手碰什么东西,那东西就变成金子。His worry turned into fury.他由烦恼变成了大怒。楼主的句子water turns into ice是正确的。turn down [关小,调低;拒绝如turn down the radio 调小点turn sb. down 拒绝turn over翻过来,翻倒;仔细考虑;交,移交turn over the book 把书翻过来 turn off一般是关灯,关电器那些turn off the tv turn up 把音量调大点与turn down 对应turn on 打开电视,电器之类的与turn off 对应turn out 结果是it turns out that he is right. 结果出来了,他是对的。 结果是他对的 turn into 变成= becomethe dog suddenly turned into a cat in my dream.