so, because, because of, so that, etc

Elementary:

explanation:

http://estudiaingles.blogspot.com/2008/02/correct-use-of-because-because-of-so.html

http://www.english-area.com/paginas/conjunciones.pdf

 

exercises:

http://a4esl.org/q/h/lb/sobe.html

http://english-zone.com/teach/so-bc.html

Homework for Tuesday 15th:

http://eslkidsworld.com/worksheets/connectives%20worksheets/connectives%20worksheet.pdf