1.as clear as a bell 极为清晰
例句：Just before the exam, I'll play a hard game of football, so I'll beas clear as a bell.
临上考场前，我要狠踢一顿足球，让脑子清醒清醒。
2.as clear as mud 一点儿也不清楚，使人莫名其妙
例句：Your explanation is as clear as mud.
你的解释一点都不清晰。
3.as cross as two sticks 非常生气的
例句：Father was as cross as two sticks this morning.
这天上午父亲气恼极了。
4.as dry as a bone 渴极了；干透，十分干燥
例句：The straws are as dry as a bone.
这些稻草完全干透了。
5.as dry as dust （人、书等）枯燥无味的，令人厌烦的
例句：This is also as dry as dust.
这同样是枯燥无味的。
6.as fit as a fiddle 非常健康，精神很好
例句：I felt as fit as a fiddle after my walking holiday.
我经过假期徒步旅行, 身体极好。