Care Japanese grammar

I will have (someone) do (something) for me

V-causative + ていただきます

I will do (something) politely

お + V-stem + します

Could you please do (something) for me?

V-て + いただけませんか

I am doing (something) humbly

V-て + おります

(Someone) can do (something) respectfully

V-(ら)れます（尊敬）

Must not (do something)

V-ない + なければならない

Must not (do something)

V-て + はいけない

It has been decided that (something) will happen

V-る + ことになっている

To make an effort to (do something)

V-る/ない + ようにする

To tell (someone) to do (something)

V + ように言う

For the purpose of (doing something)

V-る / N の + ために

It is better to do (something)

V-た + ほうがいい

to prepare/keep (in a certain state)

V-て + おく

to complete/finish (sometimes regrettably)

V-て + しまう

to exceed (too much)

V-stem / A-stem + すぎる

while doing (simultaneously)

V-stem + ながら

if (in the case of)

V-る / N の + 場合は

in a state of (remaining)

V-た / N の + まま

after doing

V-て + から

because, due to

Plain form + ので

might, may

Plain form + かもしれません

should, ought to

Plain form + はずです

it is said that, I heard that

Plain form + そうです（伝聞）

It is alright to do

V-て + もいいです