PASIVE VOICE

More activities to practise
http://www.english-area.com/paginas/gramatica.htm#inicio
http://www.english-area.com/paginas/passivesentences1.htm
http://www.englisch-hilfen.de/en/exercises/passiv1.htm
http://www.learnenglishfeelgood.com/sp/ingles-voz-pasiva1.html
http://www.learnenglishfeelgood.com/sp/ingles-voz-pasiva2.html

To choose between pasive or active
http://www.ego4u.com/en/cram-up/tests/hadrians-wall
http://www.ego4u.com/en/cram-up/grammar/passive/exercises?simple-present-2
http://www.ego4u.com/en/cram-up/grammar/passive/exercises?simple-past-2

Voz Pasiva

On this page you can find explanations and exercises.

http://web.educastur.princast.es/ies/elpiles/ARCHIVOS/paginas/depar/ingles/mis_ejercicios/1bac.htm#pasiva

Present Perfect vs Past Simple

Look at these exercises. They are very interesting.
http://www.englishpage.com/verbpage/verbs5.htm
http://www.better-english.com/grammar/pspp1.htm
http://www.1-language.com/englishcoursenew/unit55_grammar_exs.htm

Listenig activities

Some of you have asked me for more listening activities. Here you are some of them. This is a very good idea to improve this skill.
http://www.mansioningles.com/listening06.htm
http://www.mansioningles.com/listening48.htm
http://www.mansioningles.com/listening12.htm
http://www.mansioningles.com/listening38.htm

Songs are a very good way to learn English. I´m sure you know this one.
http://www.saberingles.com.ar/songs/356.html

Present Perfect or Past Simple

http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise1.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise2.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise3.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise4.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise5.html

Past simple or Present perfect

Here you are some actiovities about these tenses.
http://perso.wanadoo.es/autoenglish/gr.perf.i.htm
http://perso.wanadoo.es/autoenglish/gr.perf.p.htm
http://perso.wanadoo.es/autoenglish/gr.presper.i.htm
http://perso.wanadoo.es/autoenglish/gr.presper.p.htm
http://perso.wanadoo.es/autoenglish/gr.since.i.htm
http://perso.wanadoo.es/autoenglish/gr.since.p.htm

What about some music?

How about singing a song? Maybe you listened to this some years ago. It could be good fun to sing it.
http://www.youtube.com/watch?v=M0ZgLjdr77U

The song " Killing me softly" has been used by Pitingo in Souleria. Here you have the original one by The Fugees. You´ll like it.
http://www.musica.com/video.asp?video=740