Dicas de estudo pela Internet para 2º ano - ensino médio

PRESENT  PERFECT
http://www.ego4u.com/en/cram-up/grammar/present-perfect-simple (PODE FAZER TODOS OS EXERCÍCIOS DESTE SITE)

SINCE & FOR
http://www.ego4u.com/en/cram-up/vocabulary/since-for
http://www.englisch-hilfen.de/en/exercises/confusing_words/since_for.htm

NEVER & YET
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-35772.php
http://www.mysterycove.ch/game/files/resources/offline_exercises/offline_exercises_episode_2_level_3.pdf

MIGHT, MUST, SHOULD
http://www.englishpage.com/modals/interactivemodal3.htm
http://www.englishpage.com/modals/interactivemodal1.htm
http://www.fortunecity.com/bally/durrus/153/gramex10.html

REPORTED SPEECH
http://www.englisch-hilfen.de/en/exercises/reported_speech/statements.htm
http://www.englisch-hilfen.de/en/exercises/reported_speech/statements2.htm
http://inglesnanet.com/grammar/reportedspeech.htm