重點講解：
1. not only...but (also)...
不僅……而且……；
eg. He is not only strong and healthy but also very smart.
他不僅強壯健康，而且還很聰明。
eg. Children's television not only entertains but also teaches.
兒童電視節目不僅有娛樂性而且還有教育意義。
2. amount to
等同；接近；
eg. The confessions were obtained by what amounts to torture.
這些供狀是用近乎逼供的方式得來的。
eg. The deficits in their pension funds may amount to$ 3 trillion.
他們的養老金基金赤字可能達3萬億美元。
3. a sum of
一筆（款項）；
eg. She came in for a sum of money when her father died.
當她父親去世時，她接受了一大筆錢。
eg. We've allocated a sum of money to education.
我們已經撥出了一筆教育經費。