在 land,what，national中a的发音怎么读？
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
英语国际音标之12个单元音 - 西瓜视频
在land和national中，字母a发/ æ /音；在what中，字母a发/ ɒ /音。
你好同学，这三个单词的读音如下：
land：英[lænd] 美[lænd]，当中的a发音是：[æ]；
what：英[wɒt] 美[wɑːt]，当中的a发音是：[ɒ]、[ɑː]；
national：英[ˈnæʃnəl] 美[ˈnæʃnəl]，当中的第一个a发音是：[æ]、第二个a发音是： [ə]
希望能帮到你。
