Grammar and Language Workbook

Unit 12, Punctuation 255

Copyright © by Glencoe/McGraw-Hill

Mechanics

Lesson 82

Abbreviations I

Use the abbreviations Mr., Mrs., Ms.,and Dr.before a person’s name.

Abbreviate Junior (Jr.)and Senior (Sr.)after a person’s name. Abbreviate

professional or academic degrees that follow a person’s name.

Ida Ames,Ph.D. (doctor of philosophy) Sid Poff, M.F.A. (master of fine arts)

Use all capital letters and no periods for abbreviations that are pronounced letter

by letter or as words. Exceptions are U.S. and Washington, D.C. which do use

periods.

FBI (Federal Bureau of Investigation) ROM (read-only memory)

PSAT(Preliminary Scholastic Aptitude Test)

Use the abbreviations A.M.(ante meridiem,“before noon”) and P.M.(post

meridiem,“after noon”) for exact times. For dates use B.C. (before Christ) and,

sometimes, A.D. (anno Domini, “in the year of the Lord,” after Christ.)

10:25A.M. 4:30 P.M. 300 B.C. A.D. 50

Abbreviate calendar items (days of the week, months of the year) only when they

appear in charts and lists.

Sun. Mon. Tues. Wed. Thurs. Fri. Sat.

Jan. Feb. Mar. Apr. Aug. Sept. Oct. Nov. Dec.

Exercise 1 Complete each sentence with the abbreviation of the word or words in

parentheses. Write Cif no abbreviation should be used.

Samuel Smith [ Jr. is the principal’s name. (Junior)

1. [ Mr. Alfredo will give you the information you need. (Mister)


2. This piece of pottery dates back to 500 [ B.C.. (before Christ)


3. [ Mr. O’Malley is here to pick up his daughter. (Mister)


4. Belinda is usually home at 6:15 [ P.M. every day. (post meridiem)


5. The tool dates from about [ A.D. 618. (after Christ)


6. [ Fri. , [ Sat. , and [ Sun. are abbreviations for days of the week.
   (Friday, Saturday, Sunday)


7. Alma Romero will be here at 3:00 [ P.M. to take over. (after noon)