Referências

ENGLISH Grammar Secrets. Disponível em: <http://www.englishgrammarsecrets.com/questions1/menu.php>. Acesso em: 15 abr. 2012.

ENGLISH the easy way. Disponível em: <http://www.english-the-easy-way.com/English_ESL/Auxiliary_Verbs.htm>. Acesso em: 15 abr. 2012.

PARROTT, Martin. Grammar for english language teachers. Cambridge: Cambridge University Press, 2000.

QUIZ: auxiliary verbs. Disponível em: <http://www.usingenglish.com/quizzes/42.html>. Acesso em: 18 abr. 2012.

SHOULD Your Dog Be Watching TV?. Disponível em: <http://well.blogs.nytimes.com/2012/04/25/should-your-dog-be-watching-tv/?src=me&ref=general>. Acesso em: 19 abr. 2012.

SPENDING Too Much Time Staring at Screens?. Behavior Modification Therapy. Disponível em: <http://www.behavior-modification-therapy.com/BMT/tips-for-beating-internet-gaming-addiction.htm>. Acesso em: 01 abr. 2012.

STUDENT Life In Australia With Acit. Disponível em: <http://www.acit.edu.au/courses/international-students/acit-student-life.html>. Acesso em: 18 abr. 2012.

YOUNG Explorers Grants Program Workshops. Disponível em: <http://www.nationalgeographic.com/field/grants-programs/yeg-workshop/>; <http://www.nationalgeographic.com/explorers/grants-programs/yeg-application/>. Acesso em: 19 abr. 2012.