PAST TENSES PAST SIMPLE Structure + Subj + to inf + -ed (reg: to inf-ed irreg: 2nd column of paradigm) Subj + Aux (DO) past simple + not + to inf ? Aux (DO) past simple + Subj + to inf Use PAST CONTINUOUS + Subj + Aux (BE ) past simple + to inf + -ing Subj + Aux (BE ) past simple + not + to inf + -ing ? Aux (BE ) past simple + Subj + to inf + -ing 1. Finished actions with time reference 1. Action happening at a certain moment in the past 2. Series of actions in the past 2. Interrupted past action > Dr Frensill operated her first patient in 1998. > The doctor visited me, checked my blood tests, and prescribed me some medicine. 3. Finished durations > The doctor was operating yesterday at 4.30. > Gina was doing the photocopying when her boss called her. 3. Contemporaneity in the past > Dr Lucas was studying the patient s medical record while Dr Jonas > Paula worked at Saint Clara s hospital for three years when was checking the tests. she was in her thirties. Indicators y esterday, last + time expression, when, time expression + ago, how long ago this time + time expression, while PAST PERFECT SIMPLE Structure + Subj + Aux (HAVE ) past simple + Past Participle ? Aux (HAVE ) past simple + Subj + Past Participle 1. Action finished before another finished action 1. Action happened over a period up to a particular past time > When I arrived at the hospital, I realised I had left my > When I finally closed the office, I realised I had been working for 11 in the past documents at home. Time indicators Just, already, never By the time, when, as soon as, after, once, until For sequences of actions, use the past simple > When the inspection started, everybody took out their documents, signed a privacy form, and left the office. 372 extra + Subj + Aux (HAVE ) past simple + Aux (BE ) past participle + to inf + -ing Subj + Aux (HAVE ) past simple + not + Aux (BE ) past participle + to inf + -ing ? Aux (HAVE ) past simple + Subj + Aux (BE ) past participle + to inf + -ing Subj + Aux (HAVE ) past simple + Past Participle Use PAST PERFECT CONTINUOUS or until shortly before it hours straight. All + time expression, for a long time For, since