As well as being the neuter personal pronoun, es can be used impersonally in a general statement to mean ‘it’, just like in English, eg:
There is another important impersonal pronoun - man - which uses the same part of the verb as er, sie, es (third person singular).
You use man when you are referring to no-one in particular and translate man as 'we', 'you' or 'one', eg:
Translate the following sentences.