fail to

fail to的音标是[feɪl tuː]，意思是未能做某事。

基本翻译：失败；未做；未履行。

速记技巧：fail由fail-t组成，其中fail是词根，t类似于字母组合-t结尾。

例句：He failed to complete the task on time. 意思是他未能按时完成任务。

fail to的英文词源是拉丁语“faiere”，意为“to be unable to do”。fail to的变化形式是fail，可以作为动词和名词使用。

相关单词：

1. failure：n. 失败，失败者；故障，失败的事。这个词源于拉丁语“fallere”，意为“to deceive”，表示欺骗或失败的意思。

2. fail-safe：n. 故障安全装置，安全失效保护装置。这个词是由fail和safe两个词组成的合成词，表示在出现故障时能够自动采取安全措施的装置。

3. fail-fast：n. 快速失败检测，快速失败机制。这个词是由fail和fast两个词组成的合成词，表示在程序或系统中快速检测失败的机制。

4. fail-safe strategy：n. 安全失效保护策略，故障安全策略。这个词是由fail-safe和strategy两个词组成的合成词，表示在出现故障时能够采取的策略或措施。

5. fail-tolerant：adj. 容忍失败的，对失败有耐受力的。这个词是由fail和tolerant两个词组成的合成词，表示能够容忍失败的人或事物。

以上这些单词都与fail to有密切关系，它们都涉及到失败、故障、安全、快速检测和容忍失败等概念。这些单词在英语中广泛使用，并被应用于各种领域，如计算机科学、工程、商业、教育等。

常用短语：

1. fail to do sth. 未能做某事

2. fail in/out of sth. 未能成功

3. fail to meet expectations 没有达到预期

4. fail to understand 无法理解

5. fail to realize 未意识到

6. fail to complete 未能完成

7. fail to succeed 未能成功

双语句子：

1. I failed to finish the project on time. 我未能按时完成项目。

2. He failed to understand the complex problem. 他未能理解这个复杂的问题。

3. She failed to realize her mistake until it was too late. 她直到为时已晚才意识到自己的错误。

4. We failed to meet our target sales this year. 我们今年未能达到销售目标。

5. He failed in his attempt to climb the mountain. 他攀登那座山的尝试失败了。

6. I failed out of college because of my poor grades. 由于成绩不佳，我未能从大学毕业。

7. We all failed to understand what he said. 我们都没能理解他说的内容。

英文小作文：

Failure is a common experience in life, and it can sometimes be a valuable lesson. When we fail, we learn from our mistakes and become stronger. Although failure can be painful, it can also lead to success in the long run.

I remember when I tried to learn a new language, but I failed miserably. I couldn"t remember any words or phrases, and I felt discouraged. However, this experience taught me that failure is not the end of the world. It taught me to keep trying and not give up easily. After a while, I finally learned the language and realized that failure was just a stepping stone to success.

Failure can be a valuable tool for growth and learning, but it"s important to keep an open mind and not be too hard on ourselves when we fail. We should learn from our mistakes and use them as motivation to keep moving forward. Failure is a part of life, and it"s something that we should embrace with positivity and courage.