-(이)라고

-(이)라고 is a crucial pattern for indirect speech, specifically for quoting statements where the predicate is a noun combined with the copula 이다 ('to be'). It allows you to report what someone said, thought, or claimed about something's identity.

Conjugation Rules:
The form depends on whether the noun ends in a vowel or a consonant.

• Noun ending in a vowel + 라고:
  - 의사 (doctor) → 의사라고 했어요. (He said he is a doctor.)
  - 이거 (this thing) → 이거라고 생각해요. (I think it's this one.)
• Noun ending in a consonant + 이라고:
  - 학생 (student) → 학생이라고 말했어요. (She said she is a student.)
  - 좋은 생각 (good idea) → 좋은 생각이라고 들었어요. (I heard it's a good idea.)

This pattern is most commonly followed by verbs like 하다 (to do/say), 말하다 (to speak), 생각하다 (to think), or 믿다 (to believe).

It's important to distinguish this from other quotation forms:

• For verbs and adjectives, use -(는)다고. (e.g., 예쁘다고 했어요 - She said it's pretty.)
• For questions, use -냐고. (e.g., 학생이냐고 물었어요 - He asked if I am a student.)
• For suggestions, use -자고. (e.g., 가자고 했어요 - She suggested we go.)

Quoting Past Tense:
When quoting a past tense statement with 이다 (e.g., 학생이었다 - 'was a student'), the quotation form changes. You attach -고 directly to the past tense stem, not -(이)라고. The '라' is not used. This follows the general rule for quoting past tense statements.

• Correct: 학생이었다 + -고 → 학생이었다고 했어요. (He said he was a student.)
• Incorrect: 학생이었다라고 했어요.