IMPERATIVE SENTENCE.— An imperative sentence is one that gives a command or makes a request. The subject of an imperative sentence is seldom expressed. The word you,  understood, is the subject when a subject is not used. A period is  normally  used  at  the  end  of  an  imperative sentence;  however,  it  may  be  followed  by  an exclamation point if it is an emphatic command. For  example: Read  that  exercise. Stop! The word you, which is understood, is the subject in  both  of  these  examples. INTERROGATIVE     SENTENCE.—An interrogative  sentence  is  one  that  asks  a  question. The  normal  grammatical  order  of  the  words  is inverted  in  an  interrogative  sentence  and  the sentence may begin with either a verb or an adverb with  the  subject  following.  An  interrogative sentence  ends  with  a  question  mark.  For  example: Did  you  hear  the  bell  sound? Where  did  you  file  the  incoming  letter? “Did”  is  the  verb  in  the  first  example  and “Where”  is  an  adverb  in  the  second  example. “You”  is  the  subject  in  each  sentence. E X C L A M A T O R Y SENTENCE.—An exclamatory sentence is a complete sentence that expresses  surprise,  excitement,  or  other  strong emotion.  The  order  of  the  sentence  is  generally inverted—the subject and verb are placed near the end.  An  exclamatory  sentence  ends  with  an exclamation  point.  For  example: What  a  storm  that  was! How  wonderful  that  is  for  you! PUNCTUATION Punctuation  is  used  to  make  the  meaning  of the sentence clear to the reader. Some marks of punctuation  are  used  to  indicate,  in  written English,  the  pauses  and  stops  which  the  voice makes in spoken English. They indicate not only where a pause should come, but also the extent of 5-23 the  pause.  For  example,  the  comma  indicates  a slight  hesitation  and  the  period  a  longer  one. Other  vocal  inflections  are  conveyed  by  the question  mark  and  the  exclamation  point.  The primary  (principal)  marks  of  punctuation  are: Period:  . Comma:  , Semicolon:   ; Colon:  : Question  Mark:  ? Exclamation   Point:   ! Dash:   -- Quotation  Marks:  “  ” Parentheses:  (  ) Apostrophe: Period The  period  is  generally  the  sign  of  a  “full stop. ”  It  is  used  at  the  end  of  declarative  and imperative sentences. If a sentence ends with an abbreviation  that  requires  a  period,  only  one  mark is used for both purposes. The period is also used after  abbreviations,  initials,  and  abbreviated  titles preceding names. Examples of various uses of the period  are  shown  below. After  a  declarative  or  imperative  sentence. It  was  a  cold  day.  (declarative) Please  write  to  me.  (imperative) After   abbreviations. Ariz.  -  doz.  -  sq.  ft. After  abbreviated  titles. Mr.  G.  E.  Coleman,  Jr. Dr.  J.  B.  Holmes Rev.  Edward  Smith