keikoku wa daiji desu.

topic particle

Breakdown of keikoku wa daiji desu.

• です: to be
• 大事だいじ: important
• 警告けいこく: a warning

Questions & Answers about keikoku wa daiji desu.

How do you read 警告 は 大事 です。?

It is read:

けいこく は だいじ です。
keikoku wa daiji desu

A few notes:

• 警告 = けいこく
• は is written ha but here it is pronounced wa
• 大事 = だいじ
• です is often pronounced lightly, almost like des in careful speech

What does は do in this sentence?

は marks the topic of the sentence.

So 警告は means something like:

• as for warnings...
• speaking of warnings...

Then the rest of the sentence says something about that topic:

• 大事です = are important / is important

So the overall structure is:

• 警告は = As for warnings
• 大事です = they are important

This is different from English, where we usually just put the subject first without a special topic marker.

Why is は pronounced wa instead of ha?