not to mention更不用说(提)，更别说，何况
是一种并列连词。
可连接名词或名词短语，或形容词等与前面的并列成分如：
He has two big houses in this country, not to mention his villa in France.
他在这个国家有两套大房子，跟他那座法国的别墅比起来就小巫见大巫了。
It was both deliberate and malicious, not to mention clever.
这件事既蓄意恶意，更不用说那些高明的谋略手段。
The audience, not to mention the bewildered cast, were not amused
观众们都没觉得好笑，更别说那些莫名其妙的演员了。
He is handsome and smart, not to mention being a good athlete.他长得又帅又机灵，而且还是个运动健将。
The school's audio-visual apparatus includes a new set of multi-media device, not to mention films, records, etc.这所中学的视听设备包括一套新的多媒体装置，更不用说电影、录音等设备了。
He knows French and German, not to mention English.他熟悉法语和德语，英语就更不在话下了。
It was both deliberate and malicious, not to mention clever.
这件事既蓄意恶意，更不用说那些高明的谋略手段。
In reflection, my firm belief in the power of the brand was naive, not to mention a bit snobby.
反思一下，我对品牌力量的坚定信念是天真的，更不用说有点势利了。
六级真题-2018年6月3卷信息匹配
We’re too busy to take a long holiday this year,not to mention the fect that we can’t afford it.
我们太忙了，今年不能去度长假，我们拿不出这笔费用就更甭提了。
可连接句子。请看：
Cooking real food is the best defense — not to mention that any meal you've likely to eat at home contains about 200 fewer calories than one you would eat in a restaurant.
烹饪真正的食物是最好的防御措施，更别说你在家吃的任何一顿饭可能都比在餐馆吃的少200卡路里。
四级真题-2015年12月2卷信息匹配
We can't afford a car, not to mention the fact that we have no garage.我们买不起汽车，没有车库的事就更不必说了。