UNIT 2 (English 5th grade)

Present perfect + just / already / yet: 

ONLINE EXERCISES: 

• https://learnenglish.britishcouncil.org/es/grammar-reference/just-yet-still-already
• http://www.englisch-hilfen.de/en/exercises/tenses/present_perfect_already_yet.htm
• https://elt.oup.com/student/englishfile/preint/a_grammar/file04/grammar04_b01?cc=us&selLanguage=en

ONLINE GAMES: 

• http://www.eslgamesplus.com/already-yet-present-perfect-volley/

Present perfect vs Past simple: 

ONLINE GAMES:

• http://www.eslgamesplus.com/present-perfect-vs-past-tenses-rally/
• http://www.englishmedialab.com/GrammarGames/perfectpast/spin%20wheel%20present%20past%20tenses.html
• http://www.usingenglish.com/quizzes/228.html

ONLINE EXERCISES:

• http://www.kico4u.de/english/uebungen/aktiv/preperfmix.htm
• http://www.perfect-english-grammar.com/past-simple-present-perfect-3.html