The Intermediate Path (TOPIK 3–4)

At TOPIK 3–4 you already hold conversations. What separates an intermediate learner from an upper-beginner is not more vocabulary — it is the grammatical machinery for reporting what others said, shifting who causes and who undergoes an action, hedging your certainty, and recalling what you personally witnessed. This path climbs those five systems in the order that makes each one easier to learn: reported speech first (it recycles endings you know), then the causative/passive pair (they share suffixes), then modality, then the retrospective. Do them in sequence.

Stage 1 — Indirect (reported) speech

Start here because it reuses sentence endings you already own — you are just embedding them under a "…said that" frame. Korean has four report types, one per sentence mood, plus a set of fused colloquial contractions that natives use constantly in speech.

• Quotation overview — the whole system at a glance
• Reported statements -(ㄴ/는)다고 하다
• Reported questions -냐고 하다
• Reported commands -(으)라고 하다
• Reported suggestions -자고 하다
• The spoken contractions -(ㄴ/는)대요 · -냬요 · -(으)래요 · -재요: quotation shifts and contractions and relaying with -더라고요 vs -대요

Stage 2 — Causative: making things happen

The causative turns "the baby eats" into "the mother feeds the baby." Korean has two strategies: a short suffix fused into the verb (-이/히/리/기/우-) and a periphrastic -게 하다 that stays separate. Learn the suffix forms as vocabulary (they are lexicalized and partly irregular), and learn -게 하다 as the productive, always-available option.

• Causative overview and how the causative changes valency
• The suffixes: -이-, -히-, -리-, -기-, -우- — and which suffix a given verb takes
• The productive route: -게 하다 "make/let someone do"
• Reference: the causative suffix table

Stage 3 — Passive: undergoing the action

Now flip the arrow. The passive suffix set overlaps the causative's — this is exactly where you slow down. Beyond the suffixes, Korean has a productive -아/어지다 and a "come to be" -게 되다 that carries no blame and often means "it turned out that…".

• Passive overview
• The suffixes: -이-, -히-, -리-, -기- — and which suffix applies
• Productive -아/어지다 and the circumstantial "come to be" -게 되다
• Read this to survive the overlap: the causative/passive homophone problem and how to disambiguate them

Stage 4 — Modality and conjecture

This block is how you stop stating everything as flat fact and start hedging like a native — "it seems," "it looks like," "there's no way." These patterns are heavily tested and heavily used, and they layer subtle differences of evidence and confidence.

• -(으)ㄹ 것 같다 "I think / it seems" — the everyday hedge
• -나 보다 / -(으)ㄴ가 보다 "it seems (from evidence)"
• -는 모양이다 "it appears that"
• -(으)ㄹ 텐데 "it would be… (but)"
• -(으)ㄹ 리가 없다 "there's no way"
• Choosing between the two most common: -(으)ㄹ 것 같다 vs -나 보다

Stage 5 — The retrospective -더-

The final piece is the most distinctively Korean, and the one with no English equivalent: the retrospective -더-. It reports something you personally witnessed or came to know in the past and are now recalling — a first-hand memory, freshly retrieved. It carries strict person rules that beginners break constantly.

• The retrospective -더- core
• -더라고요 "I recall / I found that"
• The recalled attributive: -던 vs -(으)ㄴ

Common mistakes at this level

Forcing -더- onto your own present feelings. -더- reports witnessed, recalled information, and its subject can't normally be a first-person present state — you don't "observe" your own current feeling from the outside.

Reading a causative/passive suffix as the wrong one. 잡히다 is "be caught" (passive) far more often than "make catch"; 보이다 is usually "be visible / show." Let context and the presence of an object decide.

Over-using -(으)ㄹ 것 같다 for things you have direct evidence of. If you can see the wet ground, -나 보다 or -는 모양이다 (inference from evidence) is more natural than the softer "I think."

Mixing up the report frames. A question can only be reported with -냐고, a command only with -(으)라고. Learners default to the statement -다고 for everything.

Key takeaways

• Reported speech first — it recycles endings you already know under a "…said that" frame, and it splits by mood (-다고 / -냐고 / -(으)라고 / -자고).
• Causative and passive share the -이/히/리/기- suffixes — the same shape, opposite meanings; disambiguate by transitivity and context.
• Modality is graded — -(으)ㄹ 것 같다 is soft opinion, -나 보다 and -는 모양이다 are inference from evidence, -(으)ㄹ 리가 없다 is flat denial.
• -더- is witnessed, recalled information with person restrictions — never your own present feelings.
• When these five systems feel automatic, move up to The Advanced Path (TOPIK 5–6).