What it means
で follows a noun to mark the place where an action or event occurs, such as a room, school, or city. It can also mark the tool, method, or means used to do something, with meanings such as “by,” “with,” or “in.” The verb or predicate after で can be changed to match the desired level of politeness.
Usage note
Do not normally use で for the place where someone or something simply exists; に is generally used for existence. For example, a place where someone studies takes で, while a place where someone is takes に.
How to use it
私は図書館で勉強します。
I study at the library.
私は図書館で勉強する。
I study at the library.
Example sentences
私は公園で友達とサッカーをします。
I play soccer with my friends at the park.
妹は図書館で本を読みます。
My younger sister reads a book at the library.
父は駅で新聞を買います。
My father buys a newspaper at the station.
母は台所で包丁を使