The German irregular verb "werden" has a number of uses. Its basic meaning is "to become" and it can be combined with both adjectives and nouns:
Es wird kalt.
(It's getting cold.)
Ich werde langsam verrückt!
(I think I'm going mad!)
Britta will Lehrerin werden.
(Britta wants to become a teacher.)
Es wird Winter.
(Winter is coming.)
In addition to this "werden" is used as an auxiliary verb to form the future tense (which we shall look at in the next chapter) and the passive voice which we shall examine here.