sinzyuusyo wo kakuninsuru.

It’s read:

しんじゅうしょ を かくにんする

Breakdown:

• 新住所 = しんじゅうしょ
• を = pronounced o
• 確認する = かくにんする

So the full reading is:

しんじゅうしょ を かくにんする

The structure is:

• 新住所 = new address
• を = marks the direct object
• 確認する = to confirm / to check

So grammatically, this is:

[object] を [verb]

In other words:

new address + object marker + confirm/check

を marks the thing that the action is done to—the direct object.

Here, the action is 確認する (to confirm/check), and the thing being confirmed is 新住所 (new address).

So:

• 新住所を確認する = to confirm the new address

A native English speaker can think of を as roughly marking what is being acted on.

する is the plain dictionary form of the verb.

You often see dictionary form in:

• vocabulary lists
• headings
• instructions
• written notes
• neutral descriptions of actions

So 新住所を確認する may appear as:

• a memo item
• a checklist item
• a manual instruction heading
• a plain-form sentence

If you wanted a polite sentence, you could say:

新住所を確認します。

That means the same basic thing, but in a polite style.

Yes. Japanese often leaves out the subject when it is obvious from context.

So even though English usually wants something like:

• I confirm the new address
• Please confirm the new address
• We will confirm the new address

Japanese can simply say:

新住所を確認する。

The missing subject is understood from the situation.

It can mean both, depending on context.

Common translations include:

• to check
• to confirm
• to verify

The nuance is often a bit more formal or deliberate than a very casual English check.

For example, 確認する is common in:

• office language
• instructions
• customer service
• official communication

So 新住所を確認する could mean:

• check the new address
• confirm the new address
• verify the new address

Both are possible, but they feel slightly different.

• 新住所 is a compact, formal, noun-style expression.
• 新しい住所 is a more ordinary adjective + noun phrase meaning new address.

Compare:

• 新住所を確認する = concise, formal, often seen in documents or office situations
• 新しい住所を確認する = more everyday phrasing

Sino-Japanese compounds like 新住所 are very common in formal writing and business Japanese.

It is a suru-verb.

That means it is made from:

• 確認 = a noun meaning confirmation / checking
• する = to do

Together:

• 確認する = to confirm / to check

This is a very common pattern in Japanese:

• 勉強する = to study
• 連絡する = to contact
• 説明する = to explain
• 確認する = to confirm

So it is built from two parts, but functions as a single verb expression.

Here is a helpful breakdown:

新住所

• 新 = new
• 住所 = address
  • 住 = live/reside
  • 所 = place

確認

• 確 = certain / sure
• 認 = recognize / acknowledge

So 確認 has the sense of making sure or verifying.

No. Normal Japanese is usually written without spaces:

新住所を確認する。

Spaces are sometimes added in learning materials to make the structure easier to see, but in ordinary Japanese writing you would normally not include them.

It is natural in contexts like:

• office procedures
• forms and applications
• moving-related paperwork
• customer support
• checklists or task lists

For example, it could appear as:

• a note to yourself
• an instruction in a workflow
• a task on a checklist
• a heading in a procedure manual

It sounds fairly neutral to formal rather than casual conversation.

Yes, depending on context.

Even though 確認する is technically plain dictionary form, Japanese dictionary form can sometimes sound instructional in certain settings, especially in:

• manuals
• procedures
• checklists
• system prompts
• written directions

So 新住所を確認する。 might be understood as:

• Confirm the new address.
• Check the new address.

If you wanted a clearer direct command, other forms are possible, such as:

• 新住所を確認してください。 = Please confirm the new address.
• 新住所を確認しろ。 = a strong, rough command

The basic pattern is:

noun + を + verb

More specifically:

object + を + action

In this sentence:

• 新住所 = object
• を = object marker
• 確認する = verb

This is one of the most basic and common Japanese sentence patterns, so it is a very useful model to remember.