例6：At that time they could not afford the ordinary comforts of life, not to speak of luxuries.
译文：那时他连普通生活都不能维持，更不要说奢侈品了。
例7：They have three fine sons, not to speak of their two 1ovely daughters.
译文：他们有了三个好儿子，而且还有两个可爱的女儿。
例8：I don’t know algebra or geometry，not to mention calculus.
译文：我连代数、几何都不懂，更不必说微积分了。
例9：A11 they have to do is press a button，and they can see plays, films, operas and shows of every kind, not to mention political discussions and the latest exciting football match.
译文：他们所要做的只是按一下电钮，就能看到各种戏剧、电影、歌剧和各式各样的演出，而且还能看到各种政治辩论和最近举行的激动人心的足球赛。
例10：I can’t add two and two, let alone do fractions.
译文：我连2加2都不会，更不要说做分数题了。
注意：美国成语词典认为let alone只能用于追加的否定。但是，有的词典认为，该短语也可以引导追加的肯定。例如：There were five people in the car, let alone the luggage and the two dogs.
