Both “there” and “in there” refer to a place, but they are different in meaning. Here’s why:
“There” (adverb) = at/in that place
It simply points to a location.
Example: You can put your books there. (in that place).
“In there” (prepositional phrase) = inside something
“In” is a preposition, and “there” acts as its object, meaning inside a specific space.
Example: You can put your books in there. (inside that place, like a box, drawer, or bag).
So, when should you use each?
If you’re just pointing to a general spot, use “there.”
If you’re referring to an enclosed space, use “in there.”
Example:
The keys are there. (on the table).
The keys are in there. (inside the bag).
And that’s it! A small difference, but it changes the meaning.