watashi wa shuumatsu ni jimaku nashi de eiga o mite nihongo no benkyou o shimasu.

On weekends I watch movies without subtitles to study Japanese.

Breakdown of watashi wa shuumatsu ni jimaku nashi de eiga o mite nihongo no benkyou o shimasu.

• は: topic particle
• 私わたし: I
• を: direct object particle
• 映えい画が: movie

Questions & Answers about watashi wa shuumatsu ni jimaku nashi de eiga o mite nihongo no benkyou o shimasu.

Why does the sentence use は after 私 instead of が?

は marks the topic of the sentence: what you’re talking about.
が usually marks the grammatical subject or puts focus on “who/what” is doing something.

In 私は週末に字幕なしで映画を見て日本語の勉強をします。:

• 私 = “I / me”
• は = “as for…” → “As for me, …”

The sentence is not focusing on who studies; it’s just setting “me” as the general topic, then describing what I do on weekends. That’s why は is natural.

You could say 私が週末に… but that would sound like you’re contrasting with someone else or emphasizing “I (not someone else) do this on weekends,” which is not the neutral, default meaning here.

Why is に used after 週末, and could I say 週末で instead?

に is the standard particle to mark a specific time point:

• 週末に = “on the weekend”

General pattern:

• 月曜日に – on Monday
• 3時に – at 3 o’clock
• 誕生日に – on (my) birthday
• 週末に – on the weekend

で is used for:

• location of an action:
  
  • 学校で勉強します。 – I study at school.
• means/manner:
  
  • バスで行きます。 – I go by bus.

So:

• 週末で is usually wrong for “on weekends.”
• For time expressions, に is the normal choice: 週末に.