The PRESENT PERFECT TENSE is formed with a present tense form of "to have" plus the past participle of the verb (which can be either regular or irregular in form). This tense indicates either that an action was completed (finished or "perfected") at some point in the past or that the action extends to the present: I have walked two miles already [but I'm still walking]. I have run the Boston Marathon [but that was some time ago]. The critics have praised the film Saving Private Ryan since it came out [and they continue to do so].
Postmen have stopped delivering letters to the new houses in our area.
They object to the letterboxes on the front doors. They hate pushing letters through them, because the letterboxes snap shut.
If you try to push a letter through, you can’t get your fingers out!
You try pushing a letter into one of these boxes and see what happens!
You quickly regret having tried!
They have been designed to stop burglars opening your front door from the outside, but postmen dread using them as well.
The painful condition known as Letterbox Finger is just as bad as Housemaid’s Knee or Tennis Elbow!
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