TY - VIDEO 
AU - Manzur Henao, Tarek
A4 - Averanga, Alfredo Jose
A4 - Corredor Plazas, Nelson Javier
A4 - Parra Pérez, Diana Angélica
A4 - Osorio Sánchez, Marcela
A4 - Fernández Camargo, Sandra Milena
PY - 2018
UR - http://hdl.handle.net/10818/33376
AB - By the end of this lesson the student will be able to review the use present perfect tense, when to use it, how it is formed, and what to be careful with.
LA - eng
PB - Universidad de La Sabana
KW - Present perfect
KW - Grammar
KW - Adverbs
TI - Present perfect part I
ER -