alert

alert的音标是[əˈlɜːrt]，基本翻译是“警觉的，警报的”。速记技巧可以是将其中的/ə/音发成“挨”的音，/lɜː/音发成“路”的音，这样可以帮助记忆拼写和发音。

alert的英文词源：

alert来源于古英语中的“alarm”，意为警报。

变化形式：

1. adj. alert（警觉的）

2. adv. alertly（警觉地）

相关单词：

1. alarmed（惊恐的）

2. alarm（警报）

3. alarming（令人担忧的）

4. alarmclock（闹钟）

5. alertness（警觉性）

6. pre-alert（预先警告）

7. post-alert（事后警报）

8. early-alert（早期预警）

9. late-alert（迟到警报）

10. alertly-alert（警觉地警觉地）

这些单词都与alert有着密切的联系，它们在词义和用法上都有所不同，但都体现了警觉和预警的主题。这些单词在英语中广泛使用，并被用来描述各种与警觉和预警相关的情境。

常用短语：

1. alert the authorities

向当局报告

例句：If you see any suspicious activity, please alert the authorities immediately.

2. be on high alert

保持高度警惕

例句：We are always on high alert for potential threats.

3. be alert to

对...保持警觉

例句：Be alert to potential dangers when you are outdoors.

4. be alert for

寻找...

例句：I am always alert for opportunities to improve my English.

5. be on the alert

保持警惕

例句：I am always on the alert for opportunities to learn new skills.

6. call an alert

发出警报

例句：The ship"s captain called an alert when they detected a danger ahead.

7. go on an alert

保持警惕

例句：We must go on an alert against false propaganda.

英文小作文：

标题：Alertness in Life

In life, alertness is essential for maintaining safety and success. Whether it"s being alert to potential dangers, detecting opportunities, or staying vigilant against false propaganda, alertness is key. We must always be aware of what"s going on around us, and take action when necessary. It"s only by being alert that we can avoid danger, seize opportunities, and achieve our goals. Therefore, I believe that alertness should be a habit that we cultivate in ourselves, so that we can live safer, more successful lives.