naeireun heuril geoyeyo.

Tomorrow will be cloudy.

Breakdown of naeireun heuril geoyeyo.

• 내일: tomorrow
• ~은: topic particle
• 흐리다: cloudy

Questions & Answers about naeireun heuril geoyeyo.

Why is 은 used in 내일은 흐릴 거예요? Could I say 내일이 흐릴 거예요 or 내일 흐릴 거예요?

은 is the topic particle, marking 내일 as “as for tomorrow.”

• 내일이 흐릴 거예요 (subject marker 이) shifts focus to tomorrow as the grammatical subject rather than the topic.
• Dropping the particle (내일 흐릴 거예요) is grammatically possible but sounds abrupt or overly casual.
  Both alternatives work but convey slightly different nuances.

How is 흐릴 거예요 formed from the dictionary form 흐리다? What do ㄹ and 거 mean here?

Breakdown of 흐릴 거예요:

1. 흐리다 → remove 다 → 흐리
2. Stem ends in a vowel, so add ㄹ (attributive ending) → 흐릴
3. Add 거예요:
   
   • 거 = contraction of 것, “thing” (a nominalizer)
   • 예요 = polite copula ending
     Literally “the thing that will be cloudy,” i.e. “it will be cloudy.”

Why isn't there a subject like it or sky in the sentence?

Korean often omits subjects when they’re clear from context. In weather talk, everyone knows you’re referring to the sky or the weather, so 하늘이 (“sky”) is redundant and usually dropped.

Why can't I just say 내일은 흐려요 to mean “It will be cloudy tomorrow”?

흐려요 is present tense (“it is cloudy”). Even with 내일은, it sounds like “As for tomorrow, it is cloudy (right now),” which is awkward. To talk about the future, use -ㄹ 거예요 or -겠어요.

What’s the difference between -ㄹ 거예요 and -겠어요 when making predictions?

• -ㄹ 거예요 (흐릴 거예요) is a neutral, everyday future/prediction.
• -겠어요 (흐리겠어요) is more formal and often expresses the speaker’s assumption or determination. In official forecasts you’ll even hear 흐리겠습니다.

How can I change the politeness level of this sentence?

• Casual (friends): 내일은 흐릴 거야
• Polite/informal (strangers, acquaintances): 내일은 흐릴 거예요
• Formal (announcements, official): 내일은 흐리겠습니다

Any pronunciation tips for 흐릴 거예요?

• Pronounce it smoothly as [heu-ril geo-ye-yo].
• There’s no special assimilation between ㄹ and ㄱ, so say both sounds clearly.
• In fast speech 거예요 might sound like 거에요, but the correct spelling is 거예요.