老外也喜欢用动物打比方，别说，还真贴切！

as quiet as a mouse.

(像耗子)一声不响

例句：Don't wake them up. Be as a quiet as a mouse.

别把他们吵醒啦!一点声音都别出。

as blind as a bat.

瞎的;有眼无珠

例句：Without glasses she's as blind as a bat.

她不戴眼镜就是个睁眼瞎。

as stubborn as a mule.

倔得像头骡子

例句：I can't convince you to anything, you're as stubborn as a mule.

我完全说服不了你，你倔得像头骡子。

as busy as a bee.

忙得团团转

例句： She never has free time anynore, she's as busy as a bee with work.

她一点自由时间都没有，工作忙得一塌糊涂。

as red as a lobster.

非常红

例句：Whenever he gets mad, he becomes as red as a lobster.

他一生气，脸就红得跟龙虾似的。

as free as a bird.

无拘无束

例句：Travelling makes you feel as free as a bird.

旅行会让你感到自由得像鸟儿一样，无拘无束。

as silly as a goose.

非常蠢

例句： You're being as silly as a goose.

你又傻了，呆鹅。

as ugly as a toad.

非常丑

例句：That girl is as ugly as a toad.

那姑娘丑的，快赶上癞蛤蟆了。

as wise as an owl.

非常明智

例句： I always listen to my father, he's as wise as a owl.

我总是听我爸爸的，他和猫头鹰一样明智。