oneul sueop naeyongi eoryeowoyo.

subject particle

Breakdown of oneul sueop naeyongi eoryeowoyo.

• 오늘: today
• 수업: class
• 어렵다: difficult

Questions & Answers about oneul sueop naeyongi eoryeowoyo.

What does the particle 이 after 내용 do, and why not 은/는?

• 이 marks the grammatical subject: the thing that is “difficult” is the content.
• 은/는 would make it a topic: 수업 내용은 어려워요 = “As for the class content, it’s difficult” (contrastive or topic-setting).
• Also, use 이 after a noun ending in a consonant sound and 가 after a vowel. 내용 ends with the consonant [ŋ], so it takes 이.

Why is there no 의 between 수업 and 내용? Is 수업의 내용 wrong?

• Korean often forms noun–noun compounds without 의 when the relationship is clear: 수업 내용 is a common compound.
• 수업의 내용 is correct but sounds more formal/emphatic or written.
• In everyday speech, 수업 내용 is preferred.

Does 오늘 modify 수업 only, or the whole sentence?

• Here 오늘 수업 means “today’s class,” so 오늘 modifies 수업.
• If you want to highlight the day as a topic/contrast, use 오늘은 수업 내용이 어려워요 (“As for today, the class content is difficult”).

Can I just say 수업이 어려워요? What’s the nuance difference?