Unit 1 : The tense system Auxiliary verbs have / have got. Unit 2 : Present Perfect continuous verb forms have something done. Unit 3 : Narrative tenses Time expressions. Unit 4 : Countable and uncountable nouns expressing quantily something, somebody, somewhere all and every. Unit 5 : Future Conjunctions in time clauses. Unit 6 : Relative clauses Participles and infinitives Nouns in groups 1. Unit 7 : Verb patterns Infinitives see someone do / doing. Unit 8 : Modal Auxiliary verbs need and needn't have. Unit 9 : Questions and negatives I don't think you're right. Unit 10 : Expressing habit get and become. Unit 11 : Hypothesis unless, provided, in case ... Unit 12 : Noun phrases Adding emphasis Nouns in groups 2.