-겠-

V + -겠- 1. When the subject is “I”, it indicates the speaker’s strong will in the future. It’s usually used with the ‘-습니다’ ending.

내일 수지 씨에게 전화하겠습니다.

I will call Suzy tomorrow.

일찍 도착하겠습니다.

I will arrive early.

술을 마시지 않겠습니다.

I will not drink alcohol.

V/Adj/이다,아니다 + -겠- 2. When the subject is not “I”, it indicates a guess about the situation.

내일 날씨는 흐리겠습니다.

Tomorrow's weather will be cloudy.

토니 씨, 요즘 바쁘겠어요.

Tony, you must be busy these days.

맛있겠다.

It looks delicious. (It will be delicious, It must be delicious.)

• Future tense expressions.

-겠-	-을 거예요
With “I” subject, it shows strong will. 제가 전화하겠습니다. O 수지 씨가 전화하겠습니다. X	With any subject, it expresses the general future tense. 제가 전화할 거예요. O 수지 씨가 전화할 거예요. O
It is often used as a fixed expression to convey the meaning “it must be~.” 좋겠다! It must be nice! 맛있겠다! It looks good!