33 不定冠词a，an的位置 Track27
33 不定冠词a，an的位置 Track27
不定冠词a用在以辅音音素（并非辅音字母）开头的名词前；不定冠词an用在以元音音素开头的名词前。例如：
a boy a student
a university a unique person
an hour an unkind old lady
a. An apple a day keeps the doctor away. 一天一苹果，医生远离我。
b. Old hen （母鸡）: Let me give you a piece of good advice.
Young hen: What is it?
Old hen: An egg a day keeps the ax away.
一天一个蛋，不把斧头见。
c. Telling lies is a fault in a boy, an art in a lover, an accomplishment in a bachelor, and second nature in a married man.
说谎是男孩的错误、情人的艺术、单身男人的技能、已婚男人的第二天性。
an 还用在发音以元音开头的单个字母前面。例如：
an SOS sign
An L letter is in the word “letter”.
