Vídeo com explicação: https://www.youtube.com/watch?v=4dr5lN1jqRE

Link 1: http://www.k12reader.com/worksheet/is-it-an-independent-clause-or-a-dependent-clause/view/

Link 2: http://www.k12reader.com/worksheet/add-a-dependent-clause-to-an-independent-clause/view/

Link 3: http://www.k12reader.com/worksheet/add-an-independent-clause-to-a-dependent-clause/view/