as (或 when 或 where) the fancy takes one

according to one's inclination

由興趣主宰；由著性子；跟著感覺

you could move about as the fancy took you.

你可以隨便四處走動。

fancy one's (或 someone's) chances

believe that one (or someone else) is likely to be successful

相信自己（或別人）會成功

we fancy our chances in the replay.

我們相信自己會在復賽中取勝。

take (或 catch) someone's fancy

appeal to someone

討某人喜歡；迎合某人的口味；吸引某人

take a fancy

to become fond of, especially without an obvious reason

（尤指莫名其妙地）喜愛