(1)o在重读开音节中读[əu]。例如:progress moment notice close ocean
(2)词的结尾是-ia,-ial,-ian,-iate,-io,-ion,-ious,-ium等,前面只有一个辅音字母(r除外)时,o读[əu]。例如:
associate[əˈsəuʃɪeɪt] devotion[dɪˈvəuʃən] Mongolia[mɒŋˈgəʊljə]
(3)双音节词的词尾是-a,-al,-an,-ar,-en,-ɪve,-o,-on,-or,-our,-um,--us,-y时,o读[əu]。例如:broken local open stolen lotus
(4)在双音节词和多音节词中,o读[əu]。例如:
alone[əˈləun] postpone[pəustˈpəun]explode[ɪksˈpləud]
(5)在-old,-oll,-ost中,o读[əu]。例如:almost cold soldier post
(6)词末的o读[əu]。例如:also piano tobacco
(7)多音节词的词尾“o+辅音字母+e”,o也读[əu]。例如:telephone envelope
(8)在move、prove及其派生词里读做[u:],例如:move approve