十二生肖歌 教案:求一个很基础的问题:a和an的区别,谢谢

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。

辅音：发音不响亮，是噪音；口腔中气流受到阻碍；不是构成音节的主要音。英语中有28辅音。

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

4. 辅音

1) [p] pen,

2) [b] bed, comb

3) [t] tell,

4) [d], day, played, wanted

5) [k] cold, sky, quick, school, back, accept, box

6) [g] big, go, guess, language

7) [m] man

8) [n] nine, knife, autumn

9) [ ] bank, uncle, English, sing,

10) [l] land, world

11) [r] read, write,

12) [f] five, cough, laugh

13) [v] voice, of

14) [ ] think,

15) [ ] this, bathe

16) [s] sit, miss, science, case, scarf

17) [z] zoo, close,

18) [ ] sure, she, social, nation

19) [ ] pleasure,

20) [h] hot, who, hour

21) [w] wall, what, answer

22) [j] yes

23) [ ] child, teach, catch

24) [ ] joke, bridge,

25) [ts] boats

26) [dz] goods

27) [tr] tree

28) [dr] dream

5. 容易混淆的辅音

1) [v] [w] vet wet; vest west; vine wine; very well

2) [s] [ ] sink think; sort thought; miss myth; mass math

3) [z] [ ] closing clothing; breeze breathe; bays bathes

4) [n] [ ] thin thing; sin sing; ban bang win wing; ran rang
a后面加辅音字母
an后面加元音字母开头的单词

an accident

a后面加辅音字母
an后面加元音字母

元音因素开头时用an,辅音因素开头用a．比如：a shop/a useful book.an interesting story.
an accident
英语中共有48个因素，辅音有28个，元音20个，元音发音响亮，辅音不响亮