回复：只教密码，带博士生？我也来听课。A cute poem.

来源: 于 2010-12-31 12:01:27 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

比方：

a little birdie flies in sky

a=unstressed

little=stressed/unstressed

birdie=stressed/unstressed

flies=stressed

in=unstressed

sky=stressed

in total we have syllables in this pattern:

unstressed stressed unstressed stressed unstressed stressed unstressed stressed

which is tetrameter