1. 意义：'let alone'是一个短语，表示更高层次的事情都很难或者无法做到，更别说更简单或者低级别的事情了。

2. 用法：'let alone'通常用于否定句中，放在主语和谓语之间。如果放在不否定的句子中，它也可以表达强调。

3. 同义词：'much less', 'not to mention'等都有类似的意思。

例句：

1. You can't even speak basic Chinese, let alone read a Chinese poem.

2. I can't understand this advanced physics theory, much less explain it to others.

3. He can't even cook scrambled eggs, not to mention a five-course meal.

4. She doesn't have any experience in management, let alone running a company.

5. He can't even swim, much less scuba dive in the deep sea.

let alone的意思是“更不用说”、“更别提”，表示某事很难甚至不可能做到，更不要想做另一件更困难的事情。

读音：[let 'ln]

例句：

1. I can't even afford a car, let alone a house.我连车都买不起，更别提房子了。

2. He can't speak a word of French, let alone write it.他连一句法语都说不出来，更别提写了。

3. I don't have time for a hobby, let alone watching TV.我没时间好，更不用说看电视了。

let alone通常被翻译为"何况、更不必说"的意思，其次还有"不管"的意思，发音音标为[letalone]，在英语中以名词出现较多，在《新英汉词典（第3版）》中，共找到73个与let alone相关的例句。

Let alone的翻译

1.何况

例句:Live alone, work alone, eh? (独来独往 嗯? Live alone, work alone, eh?)

2.更不必说

例句:We don't even have enough for an arrest warrant. (跟不要说定罪了 Let alone a conviction.)

3.不管

例句:♪ Riding through this world all alone (? Riding through this world all alone)

4.任随、不管

例句:- What I want is to be left alone! (翻译:- What I want is to be left alone!)

用法及短语

let alone一般作为名词使用，如在let ... alone(na. 任随；更不用说；放任；莫说…(连)\n[网络] 更别提；更不必说；不管)、let alone management(un. 放任管理)、let enough alone(na. 不要画蛇添足\n[网络] 详细)等常见短语中出现较多。

例句

1. ♪ Riding through this world all alone (翻译:? Riding through this world all alone)

2. - What I want is to be left alone! (翻译:- What I want is to be left alone!)

3. I want to talk to her alone. (翻译:I want to talk to her alone.)

4. Maybe, she is alone in Hong Kong. (翻译:she is alone in Hong Kong.)

5. Never go alone into the jungle. (翻译:Never go alone to the jungle.)

6. I wanna be loved by you alone (翻译:I wanna be loved by you alone)

7. Oh, God. Let him alone, please. (翻译:{\fnMicrosoft YaHei}哦，天呐 你不要招惹他好吗？)

8. - let alone cleared for a mission? (翻译:更别说让她参加任务了 let alone cleared for a mission?)

9. Let alone getting any actual work done. (翻译:工作更是做不下去 {\fnTahoma\fs14\1cH3CF1F3}Let alone getting any actual work done.)

10. - Kill him. - Just leave us alone. - Get him off me, Dean! (翻译:- Just leave us alone.)

11. No, James! James, leave him alone! (翻译:James, leave him alone!)

12. Dines alone, walks the beach alone. (翻译:独自吃饭 独自在沙滩散步 Dines alone, walks the beach alone.)

13. Worst case scenario, they're sending someone to get rid of him, quite possibly Odin, in which case we may have a chance to get our hands on Odin himself. (翻译:Arkady is to go alone.)

14. ♫ I need sometime alone tonight ? (翻译:I need sometime alone tonight)

15. Loves 'em and leaves 'em alone (翻译:∮ So alone ∮ @ 孤胆英雄 @)