Personal pronoun.
Personal pronouns:
ich -- I
du – you
er – he
sie – she
es – it
wir – we
ihr – you all
sie – they
Sie – you
The word "sie" has three meanings:
sie - she : sie ist hier - she is here (then the verb is in the third person singular)
sie - they: sie sind hier - they are here (then the verb is in the 3rd person plural)
Sie – you in polite and formal contexts: Sie sind hier – you are here.
Sie written with a capital letter is a polite form. It is used with the 3rd person plural, even when addressing one gentleman or lady: Sie kaufen - can mean you (one person) buy and "you all" buy.
Inflection of personal pronouns is discussed on the next page.