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Find the simple past and the past participle of an irregular verb. Enter its infinitive without the preposition "to":
                   
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Colon:

Skip two spaces after a colon.

A colon is used:
  • To introduce a list and emphasize the elements of this list.
    The sentence introducing the list is complete.

    Example:

    A computer contains four drivers: a hard disk, a CD drive, a DVD drive, and a Soft-drive. Even if the sentence is not complete, a colon with a tabular form can be used.

    Example:

    A computer contains: A Hard disk, A CD drive, and A Soft-drive.
  • To introduce a list whish emphasizes the first sentence

    Example:

    She has an advice: Learn and be careful. List is introduced by words such as: these, as follows, and the following.
  • Between two clauses when the second emphasize the first.

    Example:

    She failed the exam: A lot of questions were very difficult.
  • Before a formula which reaffirms the preceding sentence

    Example:

    If you know the length “L” of a pendulum, you can know its period “T”: T=2PIsqrt[L/g]
  • To introduce a long quoted speech (a comma is usually sufficient)
  • In formal business letters: Dear: Doctor:
  • To express a ratio: 2:1
  • Between hours and minutes in time: 11:30 P.M.
Don’t use a colon: When the sentence introducing a list is not complete, but completed by the list itself.

Example:

A clause contains 1) A subject, 2) A verb.


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