Brief revision of verb tenses (active and passive) Used to (do) vs. To Be/Get Used to (doing) It is said that… To be said to… To be supposed to… Have something done Relatives: Relative Pronouns, Defining vs. Non-Defining Relative Clauses. Prepositions: At/On/In/Into for time, place and other uses, By for various uses. Nouns + prepositions. Adjectives + prepositions. Verbs + prepositions. The -ing Form and the Infinitive: Verbs + -ing, Verbs + to, Verbs + object + to, Verbs + -ing/to with a difference in meaning. Prepositions + -ing. Verbs + prepositions + -ing. Expressions + -ing. Conjunctions and Prepositions: Although/Though/Even Though, In spite of/Despite, In case, Unless, As long as/Provided/Providing, As (for reason and time), As if/As though, For, During, While, By, Until.

R. Murphy, English Grammar in Use, Cambridge, CUP.