Every so often, you may run into an in to that isn’t joined together because of how it’s used. While it’s tempting to just use into for everything, there is a way to distinguish between the two fairly easily.
Let’s look at the common uses of each form.
Into as a preposition typically tells where.
- Where did they go? They went into the house.
There are two other uses for the word as well, such as addressing issues of time or being deeply involved in something.
- The storm lasted into the night.
- He’s just completely into her.
The confusion stems from the fact that some verbs depend on the word in. For example:
- dive in
- deal in
- give in
Those verbal forms often get crammed together with to. If that happens, to will almost always tell why something happened. If in and to aren’t supposed to be joined and just happen to be next to each other, you can usually replace the to (mentally) with in order to. (Just keep that phrase in your head and not on paper—please.)
- Sam slept in to make up for a late night. [Sam slept in in order to make up for a late night.]