1、[ɔ:]ought 应该；ought认为； bought购买、贿赂 2、[u:] through 穿过。
3、[ə] thorough [ˈθʌrə] [英式]彻底的。
4、[əu] thorough [ˈθə:rəu] [美式]彻底的；though尽管。You stretch pizza dough rather than rolling it, although some say it makes no difference. I still make it though.你用手拉的匹萨面团比你用擀面杖做出的更好，尽管有人说没有区别，我还是这样做。
5、[aʊ] drought干旱；bough（树枝）；plough（犁）。I thought that the drought would destroy the crops near the lough thoroughly. Through thick and thin, the government came through it, though.我原以为这次的干旱会彻底毁掉湖边的庄稼，但是经过政府艰苦的努力，最后战胜了困难。
6、[ɔf] trough槽、线槽；cough咳嗽。Try not to cough during the concert.在音乐会中的时候尽量不要咳嗽。
7、[ʌf] tough坚韧的；enough足够的。This steak is too tough to chew.这块牛排太硬了咬不动。
8、[ɔk] lough湖，港湾; hough踝关节。
9、[ʌp] hiccough同hiccup,打嗝。
