1. 英语单词音标：
"let alone" 的音标是：/lɛt əˈloʊn/

2. "let alone" 的意思：
"Let alone" 是一个短语，用来表示“不用说，更不用说”，意思是“连...都不能更不用说”。通常用来强调某个情况的困难或不可行性，表示两个层次的否定或极端。

3. 翻译：
"let alone" 的中文意思是“更不用说”，可以用来表示某事比某件事更不可能或更困难。

4. 读音：
/let əˈloʊn/

5. 用法：
"let alone" 用于连接两个比较的部分，通常是表示更为极端或不可能的情况。
例：

He can’t even write a letter, let alone a novel.（他连一封信都写不好，更不用说写小说了。）

6. 例句：

I can't afford to buy a car, let alone a house.

She doesn't even know how to drive, let alone fly a plane.

He can't even cook instant noodles, let alone make a three-course meal.

The team hasn't won a single game this season, let alone the championship.

I don't have time to study for the exam, let alone do all the homework.

We don't have enough money for a vacation, let alone for a new car.

They can't even get through a simple conversation, let alone hold a meeting.

I can't even finish a short book, let alone read an entire novel in a week.

The dog was too tired to walk to the park, let alone run.

She hasn't even passed her driving test, let alone obtained a license.

7. 短语搭配：

let alone talk

let alone think

let alone afford

let alone deal with

let alone accomplish

let alone understand