Basic Step to English Grammar 06 UNIT 01 Parts of a Sentence 1 08 S+V(+A) | S+V+O, S+V+C UNIT 02 Parts of a Sentence 2 12 12 S+V+IO+DO | S+V+O+OC UNIT 03 Parts of a Sentence 3 16 Perception Verbs | Causative Verbs UNIT 04 Present Simple 20 Present Simple of the Verb Be | Present Simple of Action Verbs UNIT 05 Present Continuous 24 Positive Sentences & Spelling Rules | Negative Sentences & Yes-No Questions Review Test 28 Connect to Writing 30 UNIT 06 Past Simple 32 Past Simple of the Verb Be | Past Simple of Action Verbs UNIT 07 Past Continuous 36 Positive & Negative Sentences | Questions UNIT 08 Present Perfect 1 40 Forms and Uses of Present Perfect | Past Participles of Verbs UNIT 09 Present Perfect 2 44 Uses of Present Perfect | Yes-No Questions UNIT 10 Future 48 Will | Be Going To, Be+Verb+-Ing Review Test 52 Connect to Writing 54 UNIT 11 Modal Verbs 56 Can & May | Should, Must & Have To UNIT 12 Infinitives 1 60 Infinitives as Subjects | Infinitives as Complements & Objects UNIT 13 Infinitives 2 64 Infinitives as Adjectives | Infinitives as Adverbs UNIT 14 Gerunds 68 Gerunds as Subjects & Complements | Gerunds as Objects UNIT 15 The Passive Voice 72 Active & Passive Sentences | Negative & Question Forms Review Test 76 Connect to Writing 78 UNIT 16 Comparisons 1 80 Adjectives & Adverbs | As Adjective/Adverb As UNIT 17 Comparisons 2 84 Comparatives & Superlatives | Spelling Rules for Comparatives & Superlatives UNIT 18 Conjunctions 88 Because, If, Before, After, When, As Soon As | That-clauses as Subjects / Objects / Complements UNIT 19 Relative Pronouns 1 92 Relative Pronouns as Subjects: Who, That | Relative Pronouns as Subjects: Which, That UNIT 20 Relative Pronouns 2 96 Relative Pronouns as Possessives | Relative Pronouns as Objects Review Test 100 Connect to Writing 102 Appendix 105