1.in advance 提前，预先

eg. The rent must be paid in advance.
租金必须预付。

eg. They found to get everything ready in advance impossible.
他们发现提前把一切都准备好是不可能的。

eg. If there is any change about the time of the meeting, please notify us in advance.
开会时间如有变， 请提前告诉我们。

2.look forward to 盼望，期待

eg. We look forward to hearing from you soon.
我们盼望着不久能听到您的回音。

eg. If you do, after the first such evening out, you will certainly look forward to the next!
如果能做到这样，初次尝过甜头之后，你就一定会很期待下一次的晚宴了！

eg. We look forward to the continuation of the journey.
我们期待继续沿着这个方向前进。