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| Vista previa | Fecha de publicación | Título | Autor(es) |
 | - | Second Conditional | González Espejel, Luis Daniel |
 | - | Second conditional
(if clause) | Rodríguez Peredo, Bertha Susana |
 | 6-sep-2019 | Second conditional
(if clause) | Rodríguez Peredo, Bertha Susana |
 | 1-sep-2017 | Sequence connectors (and, or, but, so, first, then, later, before, finally, after that) | González Ramírez, Graciela Yadira |
 | - | Sequence connectors: and, or, but, so, first, then, later, before, finally | González Ramírez, Graciela Yadira |
 | - | Should have and shouldn't have | Lina Peña, David |
 | 6-sep-2019 | Should/Ought to | Hernández González, Esteban Vicente |
 | - | Should/Ought to | Hernández González, Esteban Vicente |
 | - | Simple future affirmative, negative, interrogative forms | Fernández Ibáñez, Liliana |
 | 6-sep-2019 | Simple Past Affirmative, Negative & Interrogative Structures | Aguilar Angulo, Paula I. |
 | 6-sep-2019 | Simple past of the verb to be. Forms: affirmative, negative and interrogative | Márquez Zárate, Leticia |
 | - | Simple past of the verb to be: affirmative, negative and interrogative forms | Márquez Zárate, Leticia |
 | - | Simple Past with Regular Verbs in Affirmative Form | González Solis, Patricio |
 | 6-sep-2019 | Simple past. Forms: affirmative, negative and interrogative | Palomino Ocañas, Yessica Susana |
 | - | Simple past. Forms: affirmative, negative and interrogative | Palomino Ocañas, Yessica Susana |
 | - | Simple Past: affirmative, negative and interrogative structures | Aguilar Angulo, Paula I. |
 | 6-sep-2019 | Simple present of the verb have/has: affirmative, negative and interrogative forms | Iturralde Villalobos, Gabriel |
 | 6-sep-2019 | Since and For with the Present Perfect Tense | Coordinación de Universidad Abierta, Innovación Educativa y Educación a Distancia, UNAM |
 | - | Structure verb + ing | Juárez Hernández, Ángela Consuelo |
 | 6-sep-2019 | Structure: verb + infinitive / verb + ing | Márquez Zárate, Leticia |
