重点讲解：
1. admit to doing sth.
（常指不情愿地）承认，供认某事；
eg. Up to two thirds of 14 to 16 year olds admit to buying drink illegally.
14到16岁的青少年中多达2/3的人承认非法买过酒。
eg. George would never admit to being wrong.
乔治从不认错。
2. yearn for
渴望；渴求；向往；
eg. He yearned for a sight of the old, familiar faces.
他渴望一见那些熟悉的老面孔。
eg. Many people living in big cities yearn for an idyllic country life.
现在的很多都市人向往那种田园化的生活。
3. let sb. be
不打扰；不干涉；
eg. If your child is really sick and needs sleep and quiet, let him be.
如果孩子真的病了，需要睡眠和静养的话，就不要去打扰他。
eg. Oh, for goodness'sake, let me be.
啊，看在老天爷面上，别逼我了。