重點講解：
1. in effect
其實；實際上；
eg. That deal would create, in effect, the world's biggest airline.
事實上，這一協議將促成世界最大航空公司的成立。
eg. The two methods were in effect identical.
那兩個辦法實際上是一樣的。
2. now and then
時而；有時；
eg. He takes my sister out to the theatre now and then.
他時常帶我妹妹去劇院。
eg. Everyone needs a pat on the back now and then.
每個人都需要不時地得到鼓勵。
3. best of all
最好的是；
eg. It was comfortable and cheap: best of all, most of the rent was being paid by two American friends.
房子既舒適又便宜：最妙的是，大部分租金是由兩位美國朋友支付的。
eg. Best of all, over time the benefits endure and continue to improve.
最棒的是，這些益處會隨著時間持續存在，而且會逐步增加。