Form and Use of the Present Perfect: http://www.isabelperez.com/happy/tenses/pres_perfect.htm
For/Since: http://www.autoenglish.org/gr.since.i.htm
Already/Just/Still/Yet: http://www.autoenglish.org/tenses/gr.presper.i.htm
Present Perfect/Past Simple: http://www.autoenglish.org/tenses.htm
Been or Gone: http://www.autoenglish.org/tenses/beenandgone.htm
Present Perfect Simple and P.P. Continuous: http://www.autoenglish.org/tenses/gr.percon.i.htm
Ever and Never: http://www.autoenglish.org/adjectivesandadverbs/EverandNever.htm
Present Perfect Form 1: http://www.perfect-english-grammar.com/present-perfect-exercise-4.html
Present Perfect Form 2 : http://www.perfect-english-grammar.com/present-perfect-exercise-5.html
No comments:
Post a Comment