beautiful是多音节词。
He was infatuated with the beautiful girl .他为那姑娘的美貌所倾倒。
There was a beautiful stone font there .那有一个精美的石制洗礼盘。
The scenery around here is perfectly beautiful .这里的景致幽美无比。
This beautiful mistress is most observant .这位俊俏的太太好眼力。
The garden 's at its most beautiful in june .花园在六月份最美丽。
beautiful是多音节词，因为在英语单词中，音节的划分是根据这个单词有几个元音因素，每一个元音因素为一个音节，组合发音算一个，所以beautiful应该有三个音节，三个或者三个以上音节的词，是多音节词。例如：careful， wonderfully，comfortable，necessary
重读闭音节的词多属于单音节
big.， heavy，thin
