lucky最高级

Most lucky

Luckiest

第二种比较常用，在中学死板的考试里被认为是四选一中正确答案。

luckiest
有个标准可作参考，一般情况下，三个或三个元音节以上的单词最高级才是most+原型。

luck·y1 Audio Help /ˈlʌki/ Pronunciation Key - Show Spelled Pronunciation[luhk-ee] Pronunciation Key - Show IPA Pronunciation
–adjective, luck·i·er, luck·i·est. 1. having or marked by good luck; fortunate: That was my lucky day.
2. happening fortunately: a lucky accident.
3. bringing or foretelling good luck, or supposed to do so: a lucky penny.

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[Origin: 1495–1505; luck + -y1]

—Related forms
luck·i·ness, noun

—Synonyms 1. favored. See fortunate. 3. auspicious, propitious, favorable.

the luckiest -- 不能缺少 the