英语单词前用an的单词

eye,hour,umbrella,elephant,apple,angle,American,island,an old man,orange,answer,idea,actor/ actress(男/女演员）,engineer(工程师）,inventor（发明家）,airplain,industry(工厂）,agreement(协议）,artical,office,event,understanding,age,opinion,enemy(敌人）,address(演说）,apartment(公寓）,18(eighteen),accident,orphan（孤儿）,assistant(助手）,apology(道歉）,emergency(突发事件）,explanation（解释）,an interesting/exciting story(一有趣/令人兴奋的故事）,excellent(优秀的）,honor（荣幸）,excuse(借口）还有吗，谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢(1) egg(2) apple (3) orange(4) ice (5) onion(6) animal (7) ant (8) ox(9) elephant(10) eagle(11) ear (12) eye(13) arm (14) engineer (15) ill(16) art (17) artist (18)exam(19) example (20) answer (21) excuse(22) idea (23) order (24) inventor (25) ambulance还有吗，谢谢最后一次actor, action movie, answer, email, eraser,hour， honest， ice-cream