Lesson 1: Present Simple vs. Present Simple Continuous
Lesson 2: Past Simple vs. Present Perfect
Lesson 3: Present Perfect Simple vs. Present Perfect
Continuous
Lesson 3:Future Time
Lesson 4:Present Perfect Simple vs. Present Perfect
Continuous
Lesson 5:Comparative and Superlative Adjectives
Lesson 6:Frequency Adverbs
Lesson 7:Passive Voice
Lesson 8:Connecting Ideas
Lesson 9:Gerunds and Infinitives
Lesson 10:Used to and Would
Lesson 11:No, None (of), Nothing/Nobody
Lesson 12:Modals: Ability, Requests, and Offers (CAN/COULD)
Lesson 13:Modals: Obligation and Prohibition: Must, Need To, Have To, Should
Lesson 14:Noun Clauses
Lesson 15:First and Second Conditional
Lesson 16:Verb + Preposition
Lesson 17:Relative Clauses: Who, Whom, That, Which
Lesson 18:Present Subjunctive
Lesson 19:Past Subjunctive
Lesson 20:Causatives – Let / Make / Have / Get
Lesson 21:Indirect Speech: Imperatives