period--句號(hào)

1、PunctuationEnglish WritingComma a series of words or phrasesadverbial clause/phrasea compund sentence connected by and, but, or, for, so, nor, yetparenthetical elements (including appositives)nonrestrictive clausestransition words (such as therefore, however, moreover, furthermore, and consequently)

2、geographical namesdateSir, MadamPeriod (Full Stop)1. The period is used at the end of a declarative sentence.U.S. President Barack Obama has been awarded the 2009 Nobel Peace Prize. Period2. Use a period at the end of a mildly imperative sentence.In case of tremors, leave the building immediately.Pe

3、riod3. Use a period at the end of an indirect question.His father used to wonder why Barrys head was so big.She asked if she could join us.Period4. The period is used with some abbreviations. Mr. Mrs. Ms. a.m. p.m. FBI CIA IOU NBCPeriodNotice that when the period ending the abbreviation comes at the

4、 end of a declarative sentence, it is also used to end the sentence. John grabbed a cup of coffee and left for office at 7 a.m.PeriodOn the other hand, when an abbreviation ends a question or exclamation, it is appropriate to add a question mark or exclamation mark after the abbreviation-ending period.- Do you enjoy living in Washington D.C.?- Yes, very much.PeriodNotice that full stops should not be used in titles, headings, or sub-headings. I Know I Know YouPeriodNotice that no full stop is required if a sentence ends with a title which contains its own punctuation such as a question mark