重点讲解：
1. come across 偶然发现；偶然遇见；
I've never come across such an experience in my time.
我一生中从没有经历过这样的事情(VEq^X|CKpn=!j。
2. be capable of 有…能力的；能够…的；
You are capable of better work than this.
你有能力做得比这更好BZ46|JbFmjLt。
3. set out to do sth. 开始；着手；
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C|yqR_RCPN。
4. come along (尤用于鼓励别人参加某活动)来吧，一起来；
There's a big press launch today and you're most welcome to come along.
今天有一个大型的媒体推介会，非常希望您能光临g+icUBvbgyhd,sSkMkNQ。