看绝望的主妇学英语习语：Let alone

Let alone: Not to mention or think of someone or something; not even to take someone or something into account.（更不用说…）The phrase is used to emphasize that if other more significant or pressing things are not possible or cannot be accommodated, a lesser thing certainly is not or cannot either.

中文释义：let alone 表含否定逻辑句子中的递进关系，可以平行衔接两个名词，动名词，介词短语，不定式等；单独讲可作“不必说；更不用说”的意思，意同 not to mention ，但 let alone既可以用在否定句之后，也可以用在肯定句之后。例句：（进一步肯定）He knows every cabbage stump in the gardens, let alone the people.（他对菜园里的每一棵白菜茬都熟悉，更别说对人了）；（进一步否定）I wouldn’t go out with him, let alone marry him.（我不会跟他一起出去，更不会嫁给他）。引申一个相近短语：let sb/sth alone,意指希望别人不要干涉某人或某事，常用短语如 let me alone，可以理解为让我自己待着（让我静静），如果加重语气，就是说“别惹我”。