单词：
Roy [rɔi] boy [bɔi]join [dʒɔin]oil [ɔil]
voice [vɔis]loyal ['lɔiəl] Joy [dʒɔi]toy [tɔi]
poison ['kɔizn] enjoy [in'dʒɔi]boycott ['kɔi‚kət]foil [fɔil]
句子：
1.Roy is a busboy and so is Joyce.
2.What was employed to destroy the Troy?
3.The noise of Detroit is so annoying.
对比练习：
[ai][ɔi]
byeboy
Kylecoil
filefoil
alliesalloys
implyemploy
friedFreud
nicenoise
tie toy
vicevoice
try Troy |
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