重点讲解：
1. be good at 擅长的；精通的；能干的；
He was very good at his work.
他工作非常出色(JCeuP8GlOc。
2. to begin with 最初；刚开始；
I found it tiring to begin with but I soon got used to it.
我起初觉得很累，但不久便适应了%=2[_mG3P3m.。
3. let alone （通常用在否定句后）遑论，更别提，更不用说；
He did not have enough money to have the tire patched up, let alone buy a new one.
他的钱还不够补这个轮胎，更别提买个新的了#)+&W8UmJ(Rf=dAK。
4. for sure 无疑；肯定；
One thing's for sure, Astbury's vocal style hasn't changed much over the years.
有一点可以肯定，阿斯特伯里的演唱风格多年来没怎么改变QvlSmd=#fK^BJ。