で
(De)
marks the means, tool, or location of an action.
Connection rules
- ＋Noun + で + action verb
- ＋Location: use で for where an action happens, に for where something exists.
- ＋Also used to mark quantity/limit (五千円で買う — 'buy for 5,000 yen').
Examples
1.
バスで学校に行きます。
Basu de gakkou ni iki masu.
I go to school by bus.
「marks the means, tool, or location of an action」
2.
図書館で勉強します。
Toshokan de benkyou shi masu.
I study at the library.
「marks the means, tool, or location of an action」