UNIDAD I.
SAY AND TELL
http://www.englishclub.com/vocabulary/cw-say-tell.htm
ED/ING RULES
http://www.englishclub.com/writing/spelling_add-ing.htm
PAST PERFECT
http://www.ego4u.com/en/cram-up/grammar/past-perfect-simple
SECOND CONDITIONAL
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/2cond.htm
SECOND CONDITIONAL EXERCISES
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/2cond1.htm
PASSIVE VOICE
http://www.ego4u.com/en/cram-up/grammar/passive
PASSIVE VOICE EXCERCISE
http://www.learnenglishfeelgood.com/g-passive-voice-simplepresent1.html
UNIDAD II.
I WISH
http://curso-gratis-ingles.euroresidentes.com/2005/11/gramtica-inglesa-frases-con-i-wish.html
SAY AND TELL
http://www.englishclub.com/vocabulary/cw-say-tell.htm
ED/ING RULES
http://www.englishclub.com/writing/spelling_add-ing.htm
PAST PERFECT
http://www.ego4u.com/en/cram-up/grammar/past-perfect-simple
SECOND CONDITIONAL
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/2cond.htm
SECOND CONDITIONAL EXERCISES
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/2cond1.htm
PASSIVE VOICE
http://www.ego4u.com/en/cram-up/grammar/passive
PASSIVE VOICE EXCERCISE
http://www.learnenglishfeelgood.com/g-passive-voice-simplepresent1.html
UNIDAD II.
I WISH
http://curso-gratis-ingles.euroresidentes.com/2005/11/gramtica-inglesa-frases-con-i-wish.html