重点讲解：
1. be about to do sth.
即将（做…）的；快要（发生…）某事；
eg. I was just about to call you.
我正准备打电话给你。
eg. I had an intuition that something awful was about to happen.
我直觉感到要出乱子了。
2. on one's own
独立地；依靠自己地；
eg. I'm well able to manage on my own.
我完全能够独自处理。
eg. Many people who don't have the opportunity to go to university are studying on their own.
许多没有考上大学的人在自学。
3. transform sth. into sth.
转换；改变；改造；
eg. Your metabolic rate is the speed at which your body transforms food into energy...
新陈代谢率是身体把食物转换为能量的速度。
eg. He managed to transform the bucolic of butterflies into a dangerous sport.
他居然把捉蝴蝶的田园消遣变成了一种危险的游戏。
4. set out to do sth.
开始；着手做某事；
eg. He has achieved what he set out to do three years ago.
他已经实现了他3年前的奋斗目标。
eg. We set out to find the truth behind the mystery.
我们开始着手揭开谜团背后的真相。