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Verbs: -ed Endings

Past Tense and Past Participle Forms

With regular verbs, both the past tense form and the past participle end in -ed. This ending can cause writers trouble, since in speech the ending is often dropped — particularly when it blends into the next sound.
  Faulty    They wash two baskets of laundry last night.
  Revised    They washed two baskets of laundry last night.
 
Standard English requires the -ed ending in the following instances.
1. To form the past tense of a regular verb
  Faulty    He ask to leave early.
  Revised    He asked to leave early.
 
2. To form the past participle of a regular verb for use with the auxiliaries has, have, or had in the active voice or with forms of be (am, is, are, was, were, be, being, been) in the passive voice

 Active
  Faulty    She has work there for a long time.
  Revised    She has worked there for a long time.
 
  Passive
  Faulty    The work will be finish tomorrow.
  Revised    The work will be finished tomorrow.
 
3. To form a past participle for use as an adjective
  Faulty    Put in some chop meat.
  Revised    Put in some chopped meat.
Note: The following -ed forms are used with to be or get: concerned, confused, depressed, divorced, embarrassed, married, prejudiced, satisfied, scared, supposed to, surprised, used to, worried.
Do not confuse the past tense and past participle forms of irregular verbs. A past tense form occurs alone as a complete verb, and a past participle form must be used with a have or be auxiliary.
  Faulty    He drunk too much last night.
  Revised    He drank too much last night.

  Faulty    She done her best.
  Revised    She did her best.
 
[seealso.bmp]
See also
Sentence Problems: Passive Voice
Sentence Problems: Verbs