half an hour

half an hour的音标是[hɑːf ən haʊt]，基本翻译为“半小时”。速记技巧可以考虑将单词拆分，如“half”和“an hour”，以便更快速地记住单词。

half an hour的词源：

half：一半

an：表示“一个”的修饰语

hour：小时

half an hour意为“半小时”。该短语来源于古英语。在古英语时期，half和an hour就已经是常用的表达方式，用来描述时间长度。随着时间的推移，这种表达方式逐渐被人们广泛接受并沿用至今。

变化形式：

past half an hour：半小时前

half an hour later：半小时后

相关单词：

quarter：一刻钟，等于十五分钟，与half一起构成时间表达方式。

minute：分钟，也常用于时间表达方式中。

hour：小时，也是时间表达方式之一。

time：时间，次数，频率，可用于时间表达方式中。

interval：时间间隔，可用于时间表达方式中。

duration：持续时间，可用于描述某件事情的持续时长。

period：时期，时间段，可用于时间表达方式中。

stretch：一段时间，可用于时间表达方式中。

phase：阶段，时期，可用于时间表达方式中。

half an hour是一种常用的时间表达方式，它表示半小时的时间长度。在英语中，我们还可以使用其他相关的单词和短语来描述时间，如quarter past, ten to等。这些表达方式丰富了英语的时间表达方式，使得人们能够更加准确和灵活地描述时间。

常用短语：

1. half an hour later

2. half an hour"s break

3. half an hour"s work

4. half an hour"s drive

5. half an hour"s walk

6. half an hour"s flight

7. half an hour"s wait

例句：

1. We had a break of half an hour for lunch.

2. It took me half an hour to complete the task.

3. It took us half an hour to get to the destination.

4. It"s a half an hour"s drive from my house to work.

5. We walked half an hour to reach the park.

6. The flight was delayed for half an hour.

7. We waited for half an hour before we were served.

英文小作文：

Half an Hour of Rest

Half an hour break can be very beneficial for our body and mind. It gives us a chance to relax, refresh our energy, and prepare for the next task or activity. When we take a break, our brain releases endorphins, which help us feel happier and more refreshed.

On the other hand, a busy lifestyle can make it difficult to take regular breaks, especially if we are constantly busy with work or responsibilities. However, it is essential to take time out for ourselves to maintain a healthy balance in our lives. Taking a short walk, listening to some music, or simply sitting back and relaxing for half an hour can help us recharge our batteries and be more productive when we return to work or study. Therefore, I suggest that we make it a habit to take regular breaks throughout the day to ensure that we are able to maintain a healthy lifestyle and feel refreshed and rejuvenated.