1.字母：语言的书写形式.元音字母a,e,i(y),o,u,
元音：发音响亮,是乐音；口腔中气流不收阻碍；是构成音节的主要音.英语中有20元音.
2.元音：(注意：下面空方括号是电脑无法输入的音标)
1) [i:] sea,he,see,piece,ceiling
2) [i] sit,build,miss,myth
3) [e] bed,desk,head,
4) [ ] bad,land,bank,stamp
5) [a:] car,fast,class,plant,calm,aunt
6) [ ] hot,want
7) [ ] door,more,sport,ball,warm,author,court,bought,caught
8) [u:] good,who,blue,soup,
9) [u] look,put,women,could
10) [ ] cup,come,blood,rough
11) [ ] girl,work,serve,nurse
12) [ ] cadre,ago,forget,polite,dollar,doctor,famous,Saturday
13) [ei] cake,they,play,eight,great,
14) [ai] bike,die,neither,light,try,find,height,eye
15) [ ] phone,cold,boat,soul,grow
16) [au] house,town
17) [ ] boy,oil
18) [ ] dear,idea,deer,here,fierce,
19) [ ] pear,care,there,fair
20) [ ] tour,poor,
3.容易混淆的元音
1) [e] [] bed bad; men,man; pen,pan; lend land
2) [i:] [ei] real rail; greet,great; mean,main; read raid
3) [e] [AI] bet bite; red write; said side,head,hide
4) [au] [ ] house horse; loud lord; south sauce; now nor; count corn; cloud clause
5) [au] [ ] found fond; gown gone; down don