shinseisho ni kinyuusuru.

I fill in the official application form.

Breakdown of shinseisho ni kinyuusuru.

• に: target particle
• 記入きにゅうする: to fill in
• 申請書しんせいしょ: an official application form

Questions & Answers about shinseisho ni kinyuusuru.

What does 申請書 mean?

申請書 means application form or application document.

• 申請 = application, request, filing
• 書 = document, written form

So 申請書 is the form or paperwork used to apply for something.

Why is the particle に used after 申請書?

Here, に marks the place or target where information is written.

So:

• 申請書に記入する = write/fill in information on the application form

With 記入する, に often shows the form, box, line, or document where something is entered.

Examples:

• 用紙に記入する = fill something in on a form
• 欄に記入する = fill something in in a box/blank

Why isn’t it 申請書を記入する?