shiharaikigen o kakuninsuru.

I check the payment due date.

Breakdown of shiharaikigen o kakuninsuru.

• を: direct object particle
• 確認かくにんする: to check
• 支払期限しはらいきげん: a payment due date

Questions & Answers about shiharaikigen o kakuninsuru.

How do you read 支払期限を確認する?

It is read:

しはらいきげん を かくにんする

• 支払期限 = しはらいきげん
• を = o
• 確認する = かくにんする

A small note: even though を is written with the kana を, in modern Japanese it is pronounced basically the same as お.

What does 支払期限 break down into?

支払期限 is a compound noun made of:

• 支払 = payment
• 期限 = deadline / time limit

So together it means payment deadline or payment due date.

You can think of it as one noun phrase:
支払期限 = the payment deadline

Why is the particle を used here?

を marks the direct object of the verb.

Here, the verb is 確認する (to check / confirm), and the thing being checked is 支払期限.

So:

• 支払期限 = what is being checked
• を = marks it as the object
• 確認する = check / confirm

In other words, this follows the common pattern:

noun + を + verb

Why is the verb 確認する instead of 確認します?