Lesson 1 Estar + gerund
Lesson 2 The Indefinido – simple past tense, formation
Lesson 3 The Indefinido – simple past tense, phrases
Lesson 4 The present perfect vs. the simple past
Lesson 5 The imperfect past (indicative)
Lesson 6 Simple past vs. Imperfect
Lesson 7 The past perfect (pluperfect)