"forewarn" 的音標為 [f??"we?n]，翻譯為“預先警告，預先告知”。

速記技巧：可以使用拼音速記法，將單詞拆分為“fo”和“warn”，其中“fo”可以聯想到“前面”，從而幫助記憶單詞。

Forewarn這個詞的詞源可以追溯到古英語，意為“預先警告”或“預先告知”。它的變化形式包括復數形式forewarnings，過去式forewarned，現在分詞forewarning，過去分詞forewarned。

相關單詞：

1. foreknowledge：預知，預見；預先知道

2. warning：警告，警示；預告

3. warn：警告，告誡；提醒

4. warned：警告過的

5. warn off：警告，驅趕

6. forewarned is forearmed：防患于未然

7. forewarned, forearmed：預先警告，預先準備

8. forewarning：預先警告，預警

9. warning signal：警報信號

10. prewarn：預先告知，提前通知

這些單詞都與forewarn這個詞有著密切的聯系，它們在不同的語境中表達了警告、預告、預知等含義。通過了解這些單詞的詞源和變化形式，我們可以更好地理解和使用它們。

常用短語：

1. forewarned is forearmed

2. forewarn sb of sth

3. be on one"s guard

4. give sb a warning

5. be forewarned to do sth

6. be forewarned

7. be forewarned that

雙語例句：

1. It is important to forewarn the students of the exam schedule in advance to avoid last-minute chaos.

2. We must give them a warning before they start working so that they can prepare themselves.

3. Be on your guard when you are walking alone at night, especially in unfamiliar areas.

4. He was forewarned that he would face difficulties in his career, but he didn"t listen and ended up being disappointed.

5. It is always wise to be forewarned that someone may try to cheat you in business dealings.

6. We must be forewarned that we may encounter unexpected challenges in our journey to success.

7. The company has been forewarned that if they don"t improve their production efficiency, they may face closure.

英文小作文：

Preparing for the Unexpected

Life is full of unexpected situations and challenges, and it is important to be prepared for them. When faced with an unexpected event, it is often helpful to have been forewarned of its possibility in advance. This allows us to take appropriate measures and prepare ourselves mentally and physically for what might lie ahead.

Forewarning can come in many forms, such as receiving a warning from a friend or family member, being informed by a professional, or being alerted by a system or device. It can also be a simple reminder to be vigilant or cautious about a particular situation or event. By being forewarned, we can avoid being caught off guard and reacting quickly and effectively when faced with an unexpected challenge.

In business, it is essential to be forewarned of potential risks and threats so that appropriate measures can be taken to avoid them or minimize their impact. Similarly, when traveling, it is wise to be forewarned of potential hazards and difficulties that might arise, such as language barriers, unfamiliar cultures, or unexpected weather conditions. By being prepared, we can overcome these challenges and enjoy our trip more fully.

In conclusion, being forewarned is an essential skill that can help us avoid unnecessary stress and worry, as well as prepare us for what might lie ahead in life and in our professional and personal endeavors.