seonsaengnimi dasi seolmyeonghae jusyeoseo ije ihaehaesseoyo.

subject particle

Breakdown of seonsaengnimi dasi seolmyeonghae jusyeoseo ije ihaehaesseoyo.

• 선생님: teacher
• 다시: again
• 이제: now

Questions & Answers about seonsaengnimi dasi seolmyeonghae jusyeoseo ije ihaehaesseoyo.

What does the particle in 선생님이 do, and why not 선생님은?

-이/가 marks the grammatical subject. Here, the teacher is the subject of the reason clause: “because the teacher explained again.” In a subordinate reason clause like this, a subject marker (이/가) is the default. 은/는 is a topic/contrast marker; using 선생님은 would imply contrast (e.g., “As for the teacher (as opposed to others)…”), which isn’t needed here. If you want a more honorific subject marker, you can use 선생님께서.

Why is it 설명해 주셔서 and not just 설명해서?

-아/어 주다 is a benefactive auxiliary meaning “do something for someone.” 설명해 주셔서 conveys that the teacher explained for the speaker’s benefit, which sounds appreciative. Without 주다 (설명해서), it simply states that the teacher explained, with no “for me” nuance.

What exactly is inside 주셔서?

Breakdown:

• 주다 “to give” used as benefactive auxiliary “do for (me)”
• Honorific: 주시다 (to honor the subject, the teacher)
• Reason connective: -어서
• Phonetic contraction: 주시어서 → 주셔서 So 설명해 주셔서 = “because (the teacher) kindly explained (for me).”

Is 주셔서 past tense? The explaining happened before understanding.