Past simple: regular and irregular verbs

• We use the past simple to talk about finished actions in the past. Regular verbs add -ed, but irregular verbs change their form completely.
• Verb type
• Affirmative
• Negative
• Question
• Regular
• Dr. Miller worked at Boston General.
• Dr. Miller did not work in Chicago.
• Did Dr. Miller work in Boston?
• Irregular
• Dr. Davis saw his first patient.
• Dr. Davis did not see a patient.
• Did Dr. Davis see a patient?
• Remember
• Use regular verbs by adding -ed or -d to the base form.
• Use irregular verbs with a changed form in affirmative sentences.
• Use 'did not' (didn't) + base form for negatives.
• Use 'Did' + subject + base form for questions.
• Examples
• Nurse Sarah helped a nervous resident in Seattle.
• Dr. Green forgot his notes during the day shift in New York.
• Did the patient recover quickly in Boston?
• Common mistakes
• Dr. Adams didn't worked in Chicago.
• Dr. Adams didn't work in Chicago.
• She seed her first patient yesterday.
• She saw her first patient yesterday.

Complete the sentences

• Dr. Taylor (arrive) ____ at Seattle Grace Hospital early this morning.
• The young medical student (feel) ____ very nervous before his first patient.
• Dr. Clark (not remember) ____ the exact diagnosis.
• ___ Dr. Evans (explain) ____ the treatment to the family in Boston?
• The grateful patient (thank) ____ the physician warmly.
• She (make) ____ a small mistake on the chart in Chicago.

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