Using Capital Letters

Here are some useful capitalization rules to follow.

  • Capitalize the first word of every sentence.
    Your poem was read at this morning’s assembly.
    Begin the session now.

  • Capitalize the pronoun I as a word and in a contraction.
    This card is something that I cherish.
    I’ve a funny story to tell you.

  • Capitalize proper nouns and proper adjectives.
    South America—South American capitals
    Italy—Italian cities
    Emerson—Emersonian ideals

  • Capitalize the first word of a quoted sentence.
    ‘‘Many surprises are awaiting you, Yogi.’’

  • Capitalize the interjection O.

    O, say can you see, by the dawn’s early light . . .

  • Capitalize the abbreviations of proper nouns.

    Mount Rainier . . . Mt. Rainier
    Twenty-third Street . . . Twenty-third St.
    Reverend Jones . . . Rev. Jones

  • Capitalize the first word of the salutation and the closing of friendly and

    business letters.
    Dear Mrs. Lowe,
    Sincerely yours,
    Respectfully,