Let's learn about "뭐든 할게요"

뭐든 할게 : I'll do anything

[other expressions]

- 뭐든 할게 = 무엇이든 할게. (to younger people or friends)

- 뭐든 할게요 = 무엇이든 할게요. (honourific by '-요')

- 뭐든 하겠습니다 = 무엇이든 하겠습니다. (formal; more honourific by '스')

[explanations]

* 뭐 : a short form of 무엇(what)

* -든 : this is used after a word ends in a vowel

* -이든 : this is used after a word ends in a consonant

* -(이)든 / -(이)든지 : whther ... or ...; either ... or ...; not matter who; no matter what; not matter how

* 하다 : do

* 할게 : 하(the stem of 하다) + -ㄹ(a suffix makes a verb future tense) + -게(one's will)

* 할게요 : 하(the stem of 하다) + -ㄹ(a suffix makes a verb future tense) + -게(one's will) + -요(an honourific verb ending suffix)

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