Verbs in Hebrew change form depending on the subject - whether singular or plural, masculine or feminine. Hebrew does not have a verb 'to be' like in English. Instead of saying 'I am a man', in Hebrew you would say 'I man'. Nouns can also be definite or indefinite in Hebrew, but unlike English there are no words for 'a' or 'an' with indefinite nouns. Most Hebrew words are built off a three letter root that is present in every form of the word, even if additional letters are added to the beginning, middle or end.