重点讲解：
1. a wealth of
大量；丰富；
eg. The city boasts a wealth of beautiful churches.
这座城市拥有众多美丽的教堂。
eg. There really is a wealth of unrecognised talent out there.
确实有很多怀才不遇的人。
2. be able tod o sth.
能做到…的；
eg. In her place I wouldn't have been able to resist it.
如果我是她就可能抗拒不了。
eg. Few people nowadays are able to maintain friendships into adulthood.
如今很少有人能将友谊维持到成年。
3. not only...but (also)
不仅……而且；
eg. Not only you but I am to blame.
不仅你，连我都要受责难。
eg. He not only wants to be taken seriously as a musician, but as a poet too.
他不仅希望被人当成一个真正的音乐家，还希望被看成一个诗人。