Unit 1 bl br 1
Unit 2 cl cr 3
Unit 3 fl fr 5
Review 1 7
Unit 4 gl gr 9
Unit 5 pl pr 11
Unit 6 drtr 13
Review 2 15
Unit 7 sc sk 17
Unit 8 sl sp 19
Unit 9 sm sn 21
Review 3 23
Unit 10 st st 25
Unit 11 sw tw 27
Unit 12 ing ong 29
Review 4 31
Unit 13 le el 33
Unit 14 ll rr tt 35
Unit 15 kn wr mb 37
Unit 16 soft c cec icy 39
Unit 17 soft g ge gi gy 41
Review 5 43
Unit 18 ar or 45
Unit 19 ir ur 47
Unit 20 er or 49
Unit 21 ou ow 51
Review 6 53
Unit 22 Schwa a eiou 55
Unit 23 o ou says‘u’ 57
Unit 24 oi oy all aw 59
Unit 25 air are 61
Unit 26 silent a t 63
Review 7 65
附录：单词表 67