1. 这是什么词？
词：deepen
英英释义：to make deep or deeper
例句：Traveling and meeting new people can deepen our knowledge of the world.
2. 为什么选这个词？
“deepen”是个动词，来自于我们熟悉的形容词“deep”，主要意思是“加深”。deepen 常和名词 situation/relationship/emotion/knowledge/understanding 等搭配使用，是个让表达更简洁的小词。
比如旅行和见人可以让我们更好地了解这个世界，我们可以用英语说成：
Traveling and meeting new people can deepen our knowledge of the world.
我们在雅思托福考试中，想表述阅读可以增强思辨力时就可以说：
Analysis skills developed from reading help deepen critical thinking skills.
我们再来看《经济学人》中出现过的几个句子来体会 deepen 的灵活用法：
a) New types of religious state school deepen segregation.
b) It will doubtless deepen Hungary’s cultural and generational divide.
c) The task facing Britain in the early 1990s was to broaden and deepen Thatcher's reforms.
许多形容词都可以通过加后缀 -en 变成形容词，比如 widen，broaden，sharpen，sadden，harden 等，我们在阅读时要注意收集，让自己的表达更简洁、富于变化。
3. 怎样学会使用这个词？
1）翻译下面的句子： 主动倾听可以加强信任和互相理解。
Active listening can deepen trust and mutual understanding.
（参考翻译：Active listening can deepen trust and mutual understanding.）
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： 办公室管理
场景 ：Project gold and Project Nexus sound like plans for bank heists or military assaults. In reality, they are the names of KPMG’s ongoing attempt to squeeze its 6700 London employees into ever smaller spaces. Since 2006 the professional-services firm has reduced the number of offices it uses in London from seven to two. By the spring of 2015 everybody will be crammed into one building in Canary Wharf. According to data from the British Council for Offices(BCO),an industry club, the average office tenant now uses around 11 square meters per worker, 35% less than in 1997. A new building in Ludgate Hill , in London’s financial district, will allocate just eight square meters to each employee. In many office, rows of hot desks have replaced individual offices and even cubicles. Nowadays it’s almost frowned on to have your own office, claim Nick Wentworth Stanley, of i2 Offices, a big serviced property firm. Firms have long known that only about half of all desks are in use at any moment, as employees work odd hours or disappear to meetings, but it was difficult to fill the spares. Better IT systems have deepened the situation that people need not be tied to a particular desk.