在元音前面要用an,其余的前面要用a.元音字母:a,e,i,o,u定冠词练习之不定冠词(a/an)练习一、请在横线上填上a或an:1._________dog2._________dictionary3.________student4._________egg5.________elephant6.__________island二、请正确选择选择a或an填写1.______pen_______bag2.______apple_______bigapple3._______banana________orange4._______hour_________house5.______umbrella_______university在元音前面要用an,其余的前面要用a.元音字母:a,e,i,o,u定冠词练习之不定冠词(a/an)练习一、请在横线上填上a或an:1._________dog2._________dictionary3.________student4._________egg5.________elephant6.__________island请正确选择选择a或an填写1.______pen_______bag2.______apple_______bigapple3._______banana________orange4._______hour_________house5.______umbrella_______university