through and through 短语through and through很常用，它可以指“完全地；彻底地；地地道道的”。例如： My mother is Irish through and through. 我妈妈是地地道道的爱尔兰人。The red knife of light appeared stabbing the darkness through and through.阳光象一柄红色利剑,刺透了一层层黑暗。 They are friends, so they know him through and through.他们是朋友，所以对他十分了解。 He’s a gentleman through and through.他是个地地道道的绅士。She is a country girl through and through.她是一名地道的村姑。 My hair is black, and I'm Chinese through and through.我是黑发，我是彻彻底底的中国人。 He is your son through and through, that's for certain.他绝对是你亲生儿子，毫无疑问。