そこで寝（ね）る。

そこで泳（およ）ぎますか。

教室（きょうしつ）で寝（ね）る。

ここで映画（えいが）を見（み）る。

レストランでお母（かあ）さんとご飯（はん）を食（た）べる。

学校（がっこう）で給食（きゅうしょく）を食（た）べる。

古（ふる）い家（いえ）で新聞（しんぶん）を読（よ）む。

私（わたし）はここでサッカーをする。

図書館（としょかん）で日本語（にほんご）を学（まな）ぶ。

ホテルで寝（ね）る。

ここで曲（ま）がります。

ここでサラと文法（ぶんぽう）を習（なら）う。

<div class='writeup-body'>で is a particle that has several different uses in Japanese. At its core, it is always used to highlight something that is 'required' to perform some sort of action. One of these uses relates to places, and translates roughly as 'at', or 'in' in English.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>私（わたし）はここでピザを食（た）べる。</div><div class='writeup-example--english'>I eat pizza here. (At this place)</div></li><li class='writeup-example'><div class='writeup-example--japanese'>私（わたし）は部屋（へや）で寝（ね）る。</div><div class='writeup-example--english'>I sleep in my room.</div></li></ul>In these sentences, the place is considered essential for the action to be performed, or the result of the action to be achieved. This is unlike the particle に, which marks the location itself as being the destination or target of an action. Basically, で means (A) 'place' allows (B) 'action' to occur. While に means (A) 'place' is the target for (B) 'action' occurring.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>彼（かれ）は公園（こうえん）にいます。</div><div class='writeup-example--english'>He is at the park. (He is at the park, but the park isn't 'allowing' him to be there)</div></li><li class='writeup-example'><div class='writeup-example--japanese'>彼（かれ）は公園（こうえん）でバーベキューをする。</div><div class='writeup-example--english'>He BBQs at the park. (Because there are barbecues at the park, it is allowing him to cook)</div></li></ul>In the first example, we can see that に marks the place that the person exists during an action, but the action itself is not dependent on the place. In the second example, the action is considered dependent on being at that place, as there are possibly no barbeques in other areas.</div>

Grammar Info

で

At, In