We began by revising some common uses of the passive The Dollar is used in the USA. Spanish is spoken in Mexico, Argentina and Spain. Bananas are grown in Brazil. Cricket is played in Pakistan. To revise, to form the passive we need To Be (is, am, are, was, were) + Past Participle (third part of verb) We then continued to revise the Present Perfect Have + Past Participle (3rd part of verb - gone, been, played etc) Has P.P. with Yet and Already. We use Already with positive statements. We use Yet with negatives and questions. I have already cleaned the kitchen I haven't hoovered the living room yet. Have you finished yet? P.P. with Since and For We use since with a point in time: I have been here since three o'clock. We use For with a period of time: I have been here for three hours. Some examples I have had my ca...