Tuesday, 12 April 2011

present tenses

http://www.ompersonal.com.ar/omexercise/tiemposverbales/unit01.htm

present continuous

http://www.impact-english.com/members/Grammar_Practice/Always/test-grammar/gr_prac_form-PPrg.htm

Difficult exercise present simple or continuous with explanation

http://grammar-quizzes.com/presenttenses1.html

forming negative sentences Present continuous

http://www.eclecticenglish.com/grammar/PresentContinuous1C.html

Present Continuous vs Present simple

http://esl.fis.edu/grammar/multi/1.htm

Present Continuous vs Present simple

http://www.perfect-english-grammar.com/present-simple-present-continuous-3.html

Present Continuous vs Present simple

http://www.perfect-english-grammar.com/present-simple-present-continuous-2.html

Present Continuous vs Present simple

http://www.perfect-english-grammar.com/present-simple-present-continuous-1.html

Present Continuous vs Present simple

http://www.englishexercises.org/makeagame/viewgame.asp?id=2332

Present Continuous vs Present simple

http://www.englishlearner.com/tests/present_simple_continuous_questions_matching_1.shtml

present simple

http://www.englishmaven.org/HP6/Present%20Tense%20Exercise%204.htm