Необходимо ли писать do/does в предложениях:I ...like water,but l like lemonade.My

I dont like water, but l like lemonade.

My mum doesnt like jelly.

Do / does is the auxiliary verb of Present Indefinite. es  is the suffix of Present Indefinite which we add to verb in the third person singular. We use do / does to form negative and interrogative.

Do is used for all the persons singular and plural except for the third person singular. Does is used for the third person singular.

Negative do / does + not + verb.

Interrogative Do / does + subject + verb.

Does my mum like jelly?

Do I like water?