does
The Italian word 'fa' is the third-person singular of the verb 'fare', which means 'to do'. However, in English, 'does' is used as the third-person singular of the verb 'to do'. In Italian, 'fa' is used in the same way, but it's important to note that Italian verbs change their endings depending on the subject. For example, 'io faccio' (I do), 'tu fai' (you do), 'lui/lei fa' (he/she does), 'noi facciamo' (we do), 'voi fate' (you all do), 'loro fanno' (they do).
It is hot today.
This phrase is used in reference to the weather, and 'Fa' is used here to represent the verb 'is', making the statement 'It is hot today.'
How much is 2 plus 2?
This phrase is typically used to question the sum of two numbers. 'Fa' in this context is used to mean 'is' in English and is indicating the result expected from the operations involved.
It is very cold.
This is another phrase that is used to describe the weather. In this context, 'Fa' means 'it is' and the statement makes the declaration 'It is very cold.'