in advance

形容词 in advance:

1. situated ahead or going before
   同义词：advance, advanced

副词 in advance:

1. ahead of time; in anticipation
   同义词：ahead, beforehand

1. Before visiting him, I called him up in advance.
   在拜访他之前，我先打电话给他。
2. To make sure that he was at home, I called him up in advance.
   为了确定他在家，我事先打电话给他。
3. Suppose I reserve seats in advance.
   我先去定好座位吧。
4. If you warn me in advance, I will have your order ready for you.
   你若预先通知我，我就能给您准备好了。
5. Care or preparation in advance; foresight.
   先见，提前考虑或准备; 远见
6. Send your luggage on in advance.
   请把行李预先送出。
7. As long as you've paid in advance we won't charge you for delivery.
   只要你预先付款，我们就不收你送货费。
8. To ride in an aeroplane you have to book in advance.
   要乘飞机必须提前定位子。