冠词KeytoIn-classExercisesKeytoIn-classExercises1-51-5CDBBBCDBBB6-106-10BABCBBABCB11-1511-15CBCDDCBCDD1616BB不定冠词(不定冠词(aa,,anan)的用法)的用法RomewasnotbuiltinRomewasnotbuiltinaaday
AAdogisafaithfulanimal
dogisafaithfulanimal
BirdsofBirdsofaafeatherflocktogether
featherflocktogether
TheyareofTheyareofananage
HecamehometwiceHecamehometwiceaamonth
Zhangcalledonyou
Zhangcalledonyou
HewishestobecomeHewishestobecomeananEdison
Edison
a=onea=onea=any,everya=any,everya=thesamea=thesamea=pera=pera=acertaina=acertaina=onelikea=onelike其他使用其他使用a/ana/an的情况的情况某些抽象名词前(某些抽象名词前(P76P76))某些物质名词前(某些物质名词前(P77P77))某些固定短语中某些固定短语中HethinksheisHethinksheisaZhugeLiangaZhugeLiang
HeisHeisashameashametohisfamily
tohisfamily
HersonisHersonisagreatdisappointmentagreatdisappointmenttohtoher
Aforcedk