a wolf in sheep's clothing

披着羊皮的狼；假冒善良的人。

cast sheep's eyes

【口】抛媚眼；送秋波。

count sheep

(非正式用法)不得睡着却勉强睡。

like a sheep to the slaughter

不知道已进入危险的情况。

lost sheep

蹈入罪孽的人；迷途之羊。

One may as well be hanged for a sheep as a lamb

一不做二不休。

separate the sheep from the goats

区别好人与坏人。

sheep that have no shepherd

乌合之众。