verbs past tense

http://home.earthlink.net/~eslstudent/grammar/verbs/past.html

simple past tense

http://www.englishpage.com/verbpage/simplepast.html

IRREGULAR VERBS

PAST TENSE EXERCISE

https://docs.google.com/fileview?id=1aup0Dnw9JBYx_-6AdNoRJpRvnNbkrg990kJDiEq_3iNc_Reu5PdfHXd6IPZg&hl=en

para ampliar el vocabulario en ingles.

http://www.theyellowpencil.com/gramacomparativos.html

comparativos en enlace

http://www.theyellowpencil.com/gramacomparativos.html

ejercicios para there is

http://www.theyellowpencil.com/gramahay.html