Usages of soujisuru
昨日 姉 と 一緒 に 部屋 を 掃除しました。kinou ane to issho ni heya o soujishimashita.
Yesterday I cleaned the room with my older sister.
彼 は 毎日 部屋 を 掃除 する。kare wa mainichi heya o souji suru.
He cleans his room every day.
母 は 私 に 寮 の 掃除 を させました。haha wa watashi ni ryou no souji o sasemashita.
My mother made me clean the dormitory.
来客 の ため に 部屋 を 掃除しました。raikyaku no tame ni heya o soujishimashita.
I cleaned the room for the visitors.
子供 の ころ、 私 は 先生 に 毎朝 教室 の 掃除 を させられて、 少し 不公平 だ と 感て いた。kodomo no koro, watashi wa sensei ni maiasa kyoushitsu no souji o saserarete, sukoshi fukouhei da to kanjite ita.
When I was a child, I was made to clean the classroom every morning by the teacher, and I felt it was a bit unfair.
私 が 留守 に して いる 間 に、 母 は 部屋 を 掃除しました。watashi ga rusu ni shite iru aida ni, haha wa heya o soujishimashita.
While I was away from home, my mother cleaned the room.
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“How do verb conjugations work in Japanese?”
Japanese verbs conjugate based on tense, politeness, and mood. For example, the polite present form adds ‑ます to the verb stem, while the past tense uses ‑ました. Unlike English, Japanese verbs don't change based on the subject — the same form works for "I", "you", and "they".
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