'Familiar' shouldn't be used as an adjective of 'Family'

Another common error from our Skype English classes concerns 'familiar'. remember 'familiar' isn't an adjective of 'family' usually. So we wouldn't say 'I had a familiar reunion yesterday' but we'd say 'I had a family reunion yesterday'. 'Familiar' is used to indicate that you have knowledge about something. For example, 'I am familiar with Paris' or 'I am familiar with chemical engineering processes'. Remember, the preposition with 'familiar' is 'with'.