by courtesy of的音標是[b? k??s?u v]；基本翻譯是“由…的好意；由于…的好意或善意”；速記技巧是：可以縮寫為“b.c.s.”或“by cs”。

by courtesy of 的英文詞源是拉丁語，意為“通過禮貌”。其變化形式如下：

1. courtesy - 名詞，“禮貌，謙遜”，源自拉丁語 courtoisie，意為“禮貌，優雅”。

2. courteous - 形容詞，“有禮貌的，謙遜的”，直接由 courtesy 演變而來。

3. courteously - 副詞，“有禮貌地，謙遜地”，由 courteous 加上后綴 -ly 構成。

相關單詞：

1. politeness：名詞，“禮貌，謙遜”，由 polite 和 ness 構成，表示一種對他人的尊重和友善的態度。

2. impolite：形容詞，“不禮貌的”，與 polite 相反，表示缺乏尊重和友善的態度。

3. gracious：形容詞，“親切的，有禮貌的”，源自法語，表示對他人表示尊重和友善的態度。

by courtesy of 的使用非常廣泛，尤其是在社交場合中，表示通過某人的禮貌和友善行為得以實現某件事情。這個詞組的使用體現了對他人的尊重和感謝，也體現了社交禮儀的重要性。

常用短語：

1. by courtesy of 借……之禮

2. with courtesy 禮貌地

3. show courtesy 對待……有禮貌

4. extend courtesy 給予禮貌

5. extend courtesies to sb 向某人表示敬意

6. show respect with courtesy 用禮貌的方式表示尊敬

7. be courteous to sb 對某人客氣

雙語例句：

1. We extend courtesy to our guests by providing them with a comfortable room and delicious food.

我們用舒適的環境和美味的食物向客人表示敬意。

2. Please show courtesy to the elderly by helping them with their bags and lifting their luggage.

請用幫助老人拿行李和搬運行李的方式向他們表示敬意。

3. By courtesy of my parents, I grew up in a warm and loving home.

多虧了父母的悉心照料，我在一個溫暖而充滿愛的家庭中長大。

英文小作文：

Title: Courtesy and Respect

Courtesy and respect are essential values in our society. They are the foundation of good manners and help to create a harmonious and friendly environment. By showing courtesy and respect to others, we can build stronger relationships and foster a sense of community.

When we encounter someone we do not know well, it is always polite to greet them with a friendly smile and a brief introduction. This shows that we are interested in them and wish to establish a positive first impression. Similarly, it is always courteous to show respect for the elderly, disabled, and those who are sick by helping them with tasks that may be difficult or uncomfortable for them.

In the workplace, courtesy and respect are essential for maintaining a positive work environment and fostering team spirit. It is important to show respect for colleagues by listening attentively, asking for their opinions, and acknowledging their contributions. This helps to create a sense of camaraderie and encourages teamwork.

In conclusion, courtesy and respect are fundamental values that we should always strive to uphold in our daily lives. They help us to build stronger relationships, foster a sense of community, and maintain a positive work environment.