... 65-66Verb formationsirregular verbs 67-70The passivepassives 71-74Verb formationsused to 75-77imperative 77-78CONDITIONALSfirst conditional 79-80second conditional 81-82zero conditional 84-85MODALSmodals ... 118-120Questions and answersmaking questions 121-123short responses 124-125Relative clauses 126-127PREPOSITIONS 128- 137 PHRASAL VERBS 138 -144TESTS 1 -3 145-153ANSWER KEY 154-168INDEX 169-174To the studentGrammar ... weekends. 13 Nouns, adjectives and adverbs 13 Summary• a, an + singular noun;We are talking about one thing but it is not the only one. There is more thanone of them.• the + singular noun:There is only one...