fourthly的音標是[?f??θl?]，基本意思是“第四個方面，第四點”。速記技巧是：可以與序數詞一起記，th是序數詞詞尾。

Fourthly這個詞來自拉丁語，意為“第四個”。它的變化形式主要有復數fourthly，其它的還有fourth的過去式fourthly，過去分詞fourthed等。

相關單詞：

1. fourth：這是最相關的單詞，表示第四個，在基數詞和序數詞中都有使用。

2. fourthly：這是fourth的變體，表示第四個，通常用于正式場合。

3. fourth：這是復數形式，表示第四個或第四個數量。

4. fourthly adv.：這是副詞形式，表示“作為第四個”。

在英語中，fourthly的使用頻率相對較低，更多的是使用其它的單詞來表示“第四個”的意思。這些單詞在英語中都有不同的變化形式和用法，但都與“第四個”這個概念相關。

在英語中，“fourth”的使用頻率非常高，因為它可以用來表示任何數量中的第四個。同時，“fourthly”和“fourthly adv.”也經常出現在正式場合的演講和文章中。此外，“fourth”還可以與其他形容詞或名詞搭配使用，表示某個事物的第四個方面或第四個特點。

總之，fourthly這個詞在英語中的使用頻率相對較低，但其變化形式和相關單詞在英語中非常常見，并且與“第四個”這個概念密切相關。

常用短語：

1. fourthly

2. in addition

3. additionally

4. furthermore

5. moreover

6. last but not least

7. finally

8. on top of that

例句：

1. We should take fourthly, safety measures into consideration when planning our journey.

2. In addition, we should try our best to improve our study skills to enhance our academic performance.

3. Additionally, we should always maintain a positive attitude towards life to avoid negative emotions.

4. Furthermore, we should try to communicate more with our friends and family to strengthen our relationships.

5. Moreover, we should always be mindful of our actions and try to improve ourselves constantly.

6. Last but not least, we should always remember to be grateful for what we have and to be kind to others.

7. Finally, we should take responsibility for our own actions and be accountable for our decisions.

英文小作文：

The Fourth Dimension of Life

Life is a journey that involves many different aspects, and it is essential to take into consideration all of them to achieve success and happiness. Among the many dimensions of life, there is one that is often overlooked, and that is the fourth dimension - time.

Time is a crucial factor in our lives, as it determines how we progress and achieve our goals. We need to be mindful of how much time we are spending on various aspects of our lives, and make sure that we are investing it in the right ways. It is essential to prioritize our tasks and goals, and avoid procrastination that can lead to regrets in the future.

In addition to time, there are other dimensions that are equally important, such as our physical health, mental well-being, social relationships, and financial stability. It is crucial to maintain a healthy lifestyle, stay positive, and build strong relationships with others. By doing so, we can achieve success and happiness in all aspects of our lives, and create a fulfilling and meaningful existence.