a和an的用法区别

不定冠词的用法区别根据句意和词首字母写单词1.Ifthepopulationintheworldkeepsincreasinglikethis,therewillbeonlystandingr________ontheearth.2.Anyonewhoisindangercancallthep________telephoneon110.3.Weshouldp_______ourearthbecausewehaveonlyone.4.“Wecanevengetmorethantwowhenwea________onetoone.”OurheadteacherMissLiuofteneducatesuswithwordslikethis.5.Thereisnoonewhohasnof;everyonecanmakedifferentmistakes.oomolicerotectaultdd根据句意和词首字母写单词1.Ilikelivingintheoldhouse,andwatchingtheviewofthesteephill______________(在远处).2.It’sverydifficultforthefemaleheadmasterto_____________(管理学校)likethis.3.Ournewschool__________(离……近)theZhongshanPark.4.There____________(需要有)morepublictoiletsinthebusyandcrowdcitycenter.inthedistancerunaschoolisclosetoneedtobe不定冠词a/an的区别特别提醒：anhour,anhonestboy，ausefulbookThereisan“f”intheword“five”.(在“five”中有字母“f”。)归纳:a用在以辅音音素开头的单词前，an用在以元音音素开头的单词前，判断一个单词是元音开头还是辅音开头，要根据其读音，而不是根据首字母。如：我们可以这样来记忆：不见元音不加an，不看字母看发音。(1)在26个字母中，前面用an的字母有：a，e，f，h，i，l，m，n，o，r，s，x，其他用a。(u不是)(2)以u开头的单词，要注意区别。如：anumbrella，anunusualstory，anunhappyboy，auniversity，ausefulbook,aunit(3)以e开头的单词，要注意区别。如：anegg,aEuropeanboy(4)以h开头的单词，要注意区别。如：anhour,anhonestboy要注意的字母：•(5)注意这几个数字（1,11，与8相关的数字）•aone-year-oldboy•aneveven-year-oldboy•aneighty-year-oldman•_____1-year-oldgirl•_____11-year-oldboy,•_____18-year-oldgirl要注意的数字：aanan1.Thereis____“u”intheword“use”.2.Thereis____“h”intheword“there”.3.Thereisn't____universityinourtown.4.Tonyis____honestboy.5.Londonis____Europeancity.6._____8-year-oldboyisplayinggames.7.Thereare60minutesin___hour.8.LiuXiangis___unusualplayer.aanaanaAnanan归纳总结：要注意的字母：要注意的数字：(1)在26个字母中，前面用an的字母有12个。(2)以字母u开头的单词。(3)以字母e开头的单词。(4)以字母h开头的单词。(5)注意的数字。