watashi wa sono haiyuu ni intabyuusuru tsumori desu.

topic particle

Breakdown of watashi wa sono haiyuu ni intabyuusuru tsumori desu.

• です: to be
• 私わたし: I
• に: indirect object particle

Questions & Answers about watashi wa sono haiyuu ni intabyuusuru tsumori desu.

What does は do in 私は here? How is it different from が?

は marks the topic of the sentence: what you’re talking about.

• 私は = “As for me / speaking about me, …”
• Using が (私が) would strongly mark I as the grammatical subject, often in contrast to someone else, like “I’m the one who will interview (not someone else).”

In a simple neutral sentence like this, 私は is the natural, default way to say “I” as the topic.

Why is it その俳優に and not その俳優を? I thought the person you act on usually takes を.

With インタビューする, the person you interview is treated as the target of the action and takes に, not を.

• X に インタビューする = interview X (direct target/person)
• Very natural: その俳優にインタビューする

You may occasionally see X をインタビューする, but it’s felt less standard or influenced by English. More natural patterns are:

• その俳優にインタビューする
• その俳優のインタビューをする (“do that actor’s interview”)

So in your sentence, に is the best choice.

Why is it インタビューするつもりです and not インタビューしますつもりです?