sensei wa maikai wakariyasui setsumei o shite kuremasu.

topic particle

Breakdown of sensei wa maikai wakariyasui setsumei o shite kuremasu.

• を: direct object particle
• 先せん生せい: teacher
• する: to do

Questions & Answers about sensei wa maikai wakariyasui setsumei o shite kuremasu.

What does は do in 先生は?

は is the topic marker.

• 先生は means “as for the teacher” or “the teacher (speaking of them)”.
• It doesn’t strictly mark the grammatical subject; it marks what we’re talking about.

In this sentence, we’re talking about the teacher, and then saying what they do:
先生は … してくれます。 → “As for the teacher, (they) do X (for me/us).”

Why is there no word for “I” or “me” in this sentence?

Japanese often omits pronouns when they’re obvious from context.

The sentence literally feels like:

• “As for the teacher, every time, easy-to-understand explanations do-(for me/us).”

The くれます part (a benefactive verb) already implies “for me / for us (the speaker’s side)”, so you don’t need 私に.
Listeners naturally understand that the teacher explains things to the speaker (or their group).

Does 先生 always mean “teacher”? Could it also be “doctor”?

先生 (せんせい) is a respectful title used for:

• School teachers
• Professors
• Doctors
• Some other professionals (e.g., lawyers, politicians, artists) in certain contexts

In a textbook example like this, it almost always means “(my/our) teacher”.
If the context were a hospital, it could easily mean “doctor”. The sentence structure itself doesn’t change; context decides the exact role.

What’s the nuance of 毎回 compared to words like いつも or ?