1. 这是个什么词？
词：boost
英英释义：to increase or improve something and make it more successful
例句：That Jeju Island waived the visa for Chinese citizens in 2008 considerably boosted its tourism.
2. 为什么选这个词？
“boost”可以作名词也可以作动词，意思是“增强、促进、刺激”，我们今天学习它作动词的用法。boost 在外媒中出现频率极高，尤其是经济和商业相关的文章中很难不碰到它。根据不同的语境，它可以替换 increase, improve, strengthen 等词，后面接的常见名词有 economy, sales, confidence, morale, productivity 等。我们来看几个例句。
新的港口建成后无疑可以促进当地经济的发展，我们就可以说：
The new port will undoubtedly boost local economy.
2008 年济州岛开始对中国公民面签后极大地刺激了当地的旅游业，就可以说：
That Jeju Island waived the visa for Chinese citizens in 2008 considerably boosted its tourism.
利物浦在连续输掉 3 场比赛后终于在主场赢得了比赛，极大地鼓舞了球队的士气，就可以说：
After losing three matches in a row, Liverpool finally won a game at home, greatly boosting the team's morale/confidence.
最近《经济学人》在一则商业新闻中就用到了 boost, 后面接的是 sales：
Derided by some the company said the publicity had boosted sales of its other “iconic sausage rolls” and food.
《经济学人》在另一篇关于中国出国游的文章中再一次用到了 boost：
Take Egypt, which China sees as a regional hub of its Belt and Road Initiative—an effort to boost its influence through massive spending on infrastructure.
这一次，boost 后面接的是 influence, 而《牛津英语搭配词典》中并没有列出 boost influence 这组搭配。可见很多地道、灵活的搭配我们必须通过大量阅读和刻意积累来获得。
3. 怎样学会使用这个词？
1）翻译下面的句子：
对很难专注的用户来说，这款强大的应用可以极大地提高工作效率。
This powerful app will greatly boost productivity of those who find themselves hard to concentrate.
（参考翻译：This powerful app will greatly boost productivity of those who find themselves hard to concentrate. 或 Those who find themselves hard to focus will find their productivity greatly boosted by this powerful app.）
2）结合自己的生活、学习、工作、兴趣等，想象在什么语境下会用到这个表达。先简要描述这个场景，再造句。
例子： 有人认为保护太多古建筑物会限制修建现代建筑的空间，从而限制经济发展。事实上，历史建筑的保留对当地的旅游业有刺激作用。
场景 ： Some people argue that preserving too many ancient structures would limit economic development by capping the space available to erect modern building. In fact, the preservation of historic buildings boosts the local tourism.