重点讲解：
1. to date 迄今；到目前为止；
I have not received news from him up to date.
直到如今我还没有接到他的消息。
2. thanks to 幸亏；归因于；
The global economy seems to be on the road to recovery, thanks to massive government stimulus plans worldwide.
由于大量的政府刺激计划，世界经济似乎正在复苏。
3. make sure 一定要；设法保证；
Make sure this meat cooks for at least an hour.
烧这肉一定不能少于一小时。
4. be eager to do sth. 热切的；渴望的；
They are eager to buy their government bonds.
他们热心购买政府债券。