两种

that读音：英[ðæt,ðət]，美[ðæt,ðət]。that可用作形容词、代词、连词、副词，还可用于固定搭配，意思是“那，那个”

一个单词两个发音的:

often:/ˈɑːfən/ ，/ˈɑːftən/

*** /əˈdʌlt/ ，/ˈæˌdʌlt/

grocery:/'ɡrosəri/ ，/'ɡroʃəri/

harass:/'hærəs/ ，/həˈræs/

1、辅音字母发音小口诀：辅音字母显易单，见面就把音来念。

b发[b], c发[k], ci(y) ce多发[s]; 例词：blue, table, Crisp, class, picture, actor, pencil, bicycle, nice,

d发[d], f [f], g发[g] [dV], [V]少见; Sandy, dog, red, fly, coffee, green, egg, orange, garage

h [h], j发[dV], k / l [k] [l]可分连; her, here, his, jeep, Japan, book, look, blue, Klan class

m [m], n [n][N], p [p] q [k] r 发[r]; meet, am, no, green, thank, English, pen, cap, quickly, Crisp,

s 最多[s]和[z], 趋唇[F] [V]也常见; sir, this, sit, is, his, whose, please, sure[F], usually[V], pleasure

x 发音剪头端，[ks]多于[gz]面; six, pencil-box, excuse, exercise; exam, (后接重读元音)

t 发[t], v 发[v], w 辅音[w]来念; teacher, it, very, voice, river, with, swim, wash, which, white

最后一个字母z，发好[z]音才算完。zoo, zero, size, puzzle,。