fureemusaizu o kakuninsuru.

I check the bicycle frame size.

Breakdown of fureemusaizu o kakuninsuru.

• を: direct object particle
• 確認かくにんする: to check
• フレームサイズ: a bicycle frame size

Questions & Answers about fureemusaizu o kakuninsuru.

What does を do in this sentence?

を marks the direct object of the verb.

In フレームサイズを確認する, the thing being checked is フレームサイズ, so を shows that フレームサイズ is the object of 確認する.

A simple pattern is:

noun + を + verb

Examples:

• 名前を確認する = confirm a name
• 内容を確認する = confirm the contents
• フレームサイズを確認する = confirm the frame size

Why is the verb 確認する at the end?

Japanese verbs normally come at the end of the sentence.

So the basic order here is:

フレームサイズ → object
を → object marker
確認する → verb

That means Japanese often follows an object + verb pattern, unlike English, which usually uses verb + object.

So even though English says confirm the frame size, Japanese says frame size + object marker + confirm.

Why is it 確認する and not 確認します?