D.V. + ㄴ/은가 봐요 => "I think it is," "it seems" A.V. + 나 봐요 => "I think it is," "it seems"

These endings express the speaker's supposition or guess. In this context, 있다 and 없다 are action verbs and they end in -나 봐요, as in 내일 숙제가 있나 봐요 "It seems there will be homework due tomorrow," and 그러나 시험은 없나 봐요 "but it seems there will be no test."

	a.	present
		D.V. + ㄴ/은가 봐(요)
		A.V. + 나 봐(요)
		N. + ㄴ/인가 봐(요)
		=> "I think it is," "it seems"

	b.	past
		V. + 었/았나 봐(요)
		=> "I think it was," "it seems"

	c.	future
		V. + ㄹ/을 건가 봐요
		=> "I think it will be," "it seems"

(a)

• 오늘 날씨가 추운가 봐요.
  => I think the weather is cold today.
• 경치가 좋은가 봐요.
  => I think the scenery is beautiful.
• 그 분이 내일 한국에 가나 봐요.
  => I think he is going to Korea tomorrow.
• 요즘 그 가수가 인기가 있나 봐요.
  => I think the singer is popular these days.
• 여기가 강의실인가 봐.
  => It seems as though this is the classroom.

(b)

• 친구가 선물을 샀나 봐.
  => I think my friend bought a gift.
• 수업을 어제는 여기서 했나 봐.
  => It seems that the class was held here yesterday.

(c) 

• 내일은 날씨가 더울 건가 봐요.
  => It seems as though it's going to be hot tomorrow.