元音字母，是指语言里起着发声作用的字母。辅音字母是一个和元音字母相对的概念。所有非元音字母的一般都是辅音字母，简单来说，除了半元音字母以外的所有非元音字母就是辅音字母。
一、英语有26个字母。元音只包括a、e、i、o、u这五个字母，其余的都为辅音。y是半元音、半辅音字母，但在英语中都把他当作辅音。
二、辅音字母发音规则：从左到右分别为辅音字母 读音 例词。
b [b] bag bike bus blue
c [k] cake card cooll
c [s] face decide cinema
d [d] desk dad day
f [f] fine five face off
g [g] good bag ago
g [dʒ] gym giraffe gentle
g [ʒ] massage rouge prestige
h [h] hello hat hot hand heat
j [dʒ] jacket job June July Japan
k [k] key like bike nook
l [l] hello like lake
l [ɫ] milk bell cycle
m [m] morning name me
n [n] no nice in neck
n [ŋ] pink bank sunk
p [p] map pen apple picture
r [r] Frank red rectangular
s [s] spell thanks six summer
s [ʃ] sugar Asia pressure
s [ʒ] pleasure leisure vision
t [t] it what white ten twelve twenty
v [v] evening vest very vongola
w [w] what we well
x [ks] box six
x [gz] exam exhaust
y [j] you yellow yes
z [z] zoo zero
z [ʒ] crozier seizure
三、元音字母发音规则：
a：在开音节中[ei] name plane Jane baby cake，在闭音节中 [ae] bag dad hat map black backe
在开音节中 [i:] he these me Chinese，在闭音节中 [e] bed let pen desk yes egg
i在开音节中 [ai] bike drive time nice kite，在闭音节中 [i] fish big drink sit milk swim
o在开音节中 [eu] those close go hoe home no，在闭音节中 [ɒ] clock not box shop sock
u在开音节中 [ju:] student excuse duty Tuesday，在闭音节中 [ʌ] bus cup jump much lunch，在开音节中,元音字母u在辅音字母j l r s后面时读[u:]音,例如:June blue ruler super