"Turn into" is a phrasal verb in Engpsh that means to change or become something else. It originated from the Old Engpsh word "turnian", which means "to rotate, revolve, or change direction". Here are some examples of "turn into" in Engpsh with Chinese translations:
The caterpillar turned into a butterfly. (毛毛虫变成了蝴蝶。)
The prince turned into a frog. (王子变成了青蛙。)
The pumpkin turned into a carriage. (南瓜变成了马车。)