1. To assume a different status, condition, role, etc. I find myself switching into teacher mode whenever I hear someone using incorrect grammar. The computer will switch into standby mode if you haven't done anything in more than 30 minutes.

2. To cause someone or something to assume a different status, condition, role, etc. In this usage, a noun or pronoun is used between "switch" and "from." You can switch the machine into a performance mode uses fuel more efficiently. They said they would switch us into a lower tax bracket because of our new employment arrangements.

3. To put on a different article or set of clothing. I need to go home and switch into my new gown for the charity ball later this evening. Let me just switch into my pajamas before we start the movie.