benkyou ni wa, shuuchuuryoku ga daiji da to omoimasu.

topic particle

Breakdown of benkyou ni wa, shuuchuuryoku ga daiji da to omoimasu.

• が: subject particle
• 勉強べんきょう: study
• と: quotative particle

Questions & Answers about benkyou ni wa, shuuchuuryoku ga daiji da to omoimasu.

In 勉強には, why do we have both に and は? What does this combination mean, and how is it different from just 勉強は?

勉強には (benkyou ni wa) is a combination of:

• に: marks a target, purpose, or context (here: for / in the context of studying)
• は: topic or contrast marker (here: as for / when it comes to)

So 勉強には roughly means:

• “For studying,”
• “When it comes to studying,”
• “In the case of study,”

If you say 勉強は, you’re just saying:

• “As for studying,” (very general topic marking)

Adding に narrows it to the sense of “for the purpose of” or “in the context of.”

So:

• 勉強は難しいです。
  As for studying, it is difficult.

• 勉強には集中力が大事だと思います。
  For studying / When it comes to studying, concentration is important (I think).

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Why is 集中力 marked with が? Could we use は instead?