repooto o hotchikisu de matomete kara, sensei ni dashimashita.

I stapled the report together and then handed it to the teacher.

Breakdown of repooto o hotchikisu de matomete kara, sensei ni dashimashita.

• を: direct object particle
• 先せん生せい: teacher
• に: indirect object particle

Questions & Answers about repooto o hotchikisu de matomete kara, sensei ni dashimashita.

Why is を used after レポート?

を marks the direct object of the verb. In this sentence, レポート is the thing being acted on: it is what the speaker stapled together and submitted.

So:

• レポートをまとめて = put the report together / staple the report together
• レポートを出しました = submitted the report

Even though there are two actions, レポート can be understood as the object for both.

Why is で used after ホッチキス?

Here, で marks the tool or means used to do something.

So:

• ホッチキスで = with a stapler

This is the same で you see in sentences like:

• はしで食べる = eat with chopsticks
• ペンで書く = write with a pen

In this sentence, it tells you what was used to gather the report pages together.

What does ホッチキス mean exactly?