This particle is often referred to as the location particle or means particle, because it’s mainly used to mark locations, the means of doing something, materials something is made from, or a reason for something. Let’s first see the location-marking function.
Usage of the particle “で de”
1. Location of operation/action
きのう みせ ていしょく た
昨日、あの店で 定食を食べた。
kinou anomisede teisyokuwo tabeta
I had a set meal at that restaurant yesterday.
定食▶︎
と しょ かん べんきょう
図書館で 勉 強した。
tosyokandebenkyoushita
I studied at the library.
2.Means, methods, tools and materials
き
ハサミで 切って ください。
hasami de ki t te kudasa i
Cut with scissors.
し き で き
この仕切りはプラスチックで出来ている。
kono shikiri wa purasuchi kku de dekite i ru
This divider is made of plastic.
3. Scope
ほっかいどう らくのう さか
北海道では 酪農が 盛んです。
hokkaidodewarakunougasakandesu
Dairy farming is thriving in Hokkaido.
*When the meaning of contrast is entered, “で” for place + “は” for contrast = “では”.