重点讲解：
1. pay tribute to
对……表示赞赏或敬意；
eg. He wroted a song to pay tribut to the men died in the war.
他写这首歌向在战争中捐躯的人致敬。
eg. We pay tribute to his courage.
我们赞赏他的勇气。
2. tip off
给…通风报信；暗中告知；
eg. The visual media had tipped off.
视觉媒体已经听到了风声。
eg. They were tipped off that he might be living in Wales.
他们探得风声他可能住在威尔士。
3. participate in
参与；参加；
eg. Perhaps he is participating in an examination.
他也许正在参加一个考试。
eg. We actively prepare to participate in tender.
我们积极准备参加投标。
4. kick off
（事件、比赛或讨论等）开始；
eg. Candidates kick off their campaigns with a speech.
竞选官职的候选人往往以发表讲话来开始竞选活动。
eg. The shows kick off on October 24th.
演出10月24日开始。
