"I like to drink."
you have to use the infinitive form. It's just like spanish in that sense 0:) Me gusta beber not me gusta bebe.... Why is it like that? Because you need the TO in there in order for it to be grammatically correct. "I like/love TO drink" and the infinitives or not conjugated forms, come with the to, while other verbs are only the verb. Take eat for example: mangent is (they) eat, manger is to eat. Hope that makes sense!
Vouloir (infinitive form of the future tense "voudrais") means to want, so this could be used grammatically similarly, but not according to their instructions. "Aimer" literally means "to like", but, in some cases, it's used as if it does mean "to love" (je t'aime à la lune et retour "i like(love) you to the moon and beyond"). Adorer means "to love" and would be used for foods.
in all languages, the infinitive form is the non-conjugated form of the word. For example, in English, the infinitive forms are "to _", or "__ing". To run, running. I like running, or I like to run. It's the same in French. I like to drink / I like drinking = J'aime boire. Now, you can conjugate boire into it's different forms by putting each form with the subject. In English, to drink conjugated would be: I drink, you drink, they drink, we drink, he/she/it drinks. In French, you can also conjugate it. Does that make sense? Conjugate just means putting a subject with the form of that verb that belongs with it. Hope that makes sense!
There are three types of french verbs (not counting irregulars): -er, -ir, -re. Depending on the verb, you take off the conjugation's ending and add one of these three endings to the verb to make it infinitive. Each has a different conjugation. "Tu aimes". Take off -es (bc its the conjugation's ending) and add -er (bc aimer is an -er verb) : aimer. -er verbs are the most common.