Breakdown of sakuya wa denki o tsukeppanashi ni shite nete shimaimashita.
はwa
topic particle
をo
direct object particle
〜て〜te
connective form
電気denki
light
Questions & Answers about sakuya wa denki o tsukeppanashi ni shite nete shimaimashita.
Why is は used after 昨夜?
昨夜は sets last night as the topic: As for last night, ...
Using は here helps frame the sentence as talking about what happened last night. It does not mean contrast is always strong, but it can lightly suggest speaking specifically about last night.
You would usually not use に with 昨夜 here. Time words like 今日, 昨日, 昨夜, 明日 often appear without に, especially when they refer to general time expressions rather than exact points in time.
Why is 電気 marked with を?
Because 電気をつける means to turn on the light(s).
Here, 電気 is the thing being turned on, so it takes the object marker を.
A very common set is:
- 電気をつける = turn on the light(s)
- 電気を消す = turn off the light(s)
Even though 電気 literally means electricity, in everyday Japanese it often refers to the lights in context.
What does つけっぱなし mean?
