an apple
an orange
an english book
an ice-cream
总之元音音标前面加an
an interesting
an hour
an engineer
an old man
an excellent
an umbrella
还有很好多好多,我也不想打了,^__^希望能帮到你谢谢，希望你能帮我把字母加An的写出来就好了。我是英语废