%0 Audiovisual Material %A Manzur Henao, Tarek %8 2018-06-14 %U http://hdl.handle.net/10818/33374 %X By the end of this lesson the student will be able to review the use of present perfect tense in negative form and some adverbs. %I Universidad de La Sabana %K Present perfect negative %K Grammar %K Time expressions %T Present perfect part II %~ Intellectum