Let's learn about "밥 먹기 전 인사"

A. 잘 먹겠습니다 : Thank you for the the meal, I'll eat well

B. 맛있게 드세요 : Enjoy your meal

B. 많이 먹어요 : Eat a lot

[other expressions]

- 잘 먹을게. (to younger people or friends)

- 잘 먹을게요. (honourific by '-요')

- 잘 먹겠습니다. (formal; more honourific by '스')

- 맛있게 먹어. (to younger people or friends)

- 맛있게 먹어라. (to younger people or friends)

- 맛있게 먹게. (to younger people or friends)

- 맛있게 먹어요. (honourific by '-요')

- 맛있게 드세요. (more honourific by '시')

- 맛있게 드셔요. (more honourific by '시')

- 맛있게 드십시오. (formal; more honourific by '시')

- 많이 먹어. (to younger people or friends)

- 많이 먹어라. (to younger people or friends)

- 많이 먹게. (to younger people or friends)

- 많이 먹어요. (honourific by '-요')

- 많이 드세요. (more honourific by '시')

- 많이 드셔요. (more honourific by '시')

- 많이 드십시오. (formal; more honourific by '시')

[explanations]

* 잘 : well

* 먹다 : eat

* 먹을게 : 먹(the stem of 먹다) + -을게(I'll ~)

* 먹을게요 : 먹(the stem of 먹다) + -을게(I'll ~) + -요(an honourific ending suffix)

* 먹겠습니다 : 먹(the stem of 먹다) + -겠(one's will) + -스(a suffix makes a verb more honourific) + -ㅂ니다(an honourific descriptive verb ending suffix)

* -을게(요) / -겠습니다 : I'll ~

* 맛있는 / 맛난 : delicious

* 맛있다 : be delicious

* 맛있게 : an adverb form of 맛있는 by '-게'

* 많은 : many; much

* 많다 : be many; be much

* 많이 : an adverb form of 많은 by '-이'

* 먹다 : eat (non-honourific word)

* 드시다 : eat (honourific word to the elderly)

* 먹어 : 먹(the stem of 먹다) + -어(a non-honourific propositive verb ending suffix means "Please ~")

* 먹어라 : 먹(the stem of 먹다) + -어라(a non-honourific propositive verb ending means "Please ~")

* 먹게 : 먹(the stem of 먹다) + -게(a non-honourific propositive verb ending suffix means "Please ~")

* 먹어요 : 먹(the stem of 먹다) + -어(a propositive verb ending suffix means "Please ~") + -요(an honourific ending suffix)

* 드세요 : 드시(the stem of 드시다) + -시(a suffix makes a verb more honouricic) + -어(a propositive verb ending suffix means "Please ~") + -요(an honourific ending suffix)

* 드셔요 : 드시(the stem of 드시다) + -시(a suffix makes a verb more honouricic) + -여(a propositive verb ending suffix means "Please ~") + -요(an honourific ending suffix)

* 드십시오 : 드시(the stem of 드시다) + -시(a suffix makes a verb more honouricic) + -ㅂ시오(an honourific  propositive verb ending suffix means "Please ~")