In English, this is mainly called imperative sentences. Imperative sentences could be an order, a request or a command.
For example:
Let’s go = Andiamo!
There are even two ways of saying “Excuse Me”. The ways are:
By using ‘scusa’ for addressing informally and by using ‘scisi’ for addressing formally
General commands are also expressed in the infinitive form such as:
- Pull = Tirare
- Push = Spingere
Also another point to be noted is that pronouns do get attached to ends of the imperatives to form a word,
E.g.
- Ripetilo, per favore. = Repeat it, please.
- Leggimelo = Read me it.
With imperatives with only a single syllable, like fa', da', di', sta', the very first non-vowel of pronouns are to be doubled ("gli" doesn’t abide this), e.g.
- Dimmi! = Tell me!
- Stacci = Stay there
- Dammelo! = Give me it!
- Diglielo = Tell it to him!