cause of action的音標為[k?:z ?v ? "ɑ:k?]，基本翻譯為“訴訟原因，訴訟理由”。速記技巧為：cao"e"of"a"ka（諧音為“曹娥的阿卡”）表示訴訟原因。

Cause of action這個詞的詞源可以追溯到古英語，意為“行動的原因”或“訴訟的理由”。它的詞形變化形式包括復數形式causes of action，過去式和過去分詞形式caused/acted，現在分詞形式causing。

相關單詞：

1. Action - 這是cause of action的近義詞，意為“行動”、“訴訟”。

2. Litigation - 意為“訴訟”、“打官司”，這個詞是由“litigate”（進行訴訟）和“igation”（名詞）組成的。

3. Law - 意為“法律”，這個詞是cause of action的基礎，因為它涉及到法律和法律制度。

4. Cause - 意為“原因”、“起因”，與cause of action中的cause同源。

5. Reasons - 意為“原因”、“理由”，這個詞與cause of action中的cause意思相近。

以上這些單詞都與cause of action有著密切的聯系，因為它們都涉及到法律、訴訟和原因等概念。同時，這些單詞也反映了法律和語言之間的密切關系，因為它們都是為了表達法律上的概念而形成的。

常用短語：

1. cause of action (訴訟原因)

2. bring a lawsuit (提起訴訟)

3. legal action (法律行動)

4. legal claim (法律索賠)

5. legal basis (法律依據)

6. legal right (法律權利)

7. legal obligation (法律義務)

雙語例句：

1. The plaintiff has brought a lawsuit against the defendant for violating his legal rights. (原告因被告侵犯其法律權利而提起訴訟。)

2. The court has ruled in favor of the plaintiff based on the defendant"s failure to fulfill their legal obligation. (法院基于被告未履行其法律義務而作出有利于原告的裁決。)

3. The defendant"s actions caused the plaintiff to bring a lawsuit, and the court found in favor of the plaintiff. (被告的行為導致原告提起訴訟，法院判決原告勝訴。)

4. The cause of action in this case is based on the defendant"s failure to comply with the contract terms. (本案的訴訟原因基于被告未遵守合同條款。)

5. The legal basis for this lawsuit is the plaintiff"s right to compensation for damages caused by the defendant"s actions. (此訴訟的法律依據是原告有權因被告行為造成的損害獲得賠償。)

6. The legal claim of the plaintiff is that the defendant should be held responsible for any losses incurred as a result of their actions. (原告的法律索賠是被告應對因其行為產生的任何損失負責。)

7. The court has dismissed the defendant"s defense, finding that there was no valid legal basis for their claim. (法院駁回被告的辯解，認定其主張沒有有效的法律依據。)

英文小作文：

標題：Legal Action and Its Impact on Society

In today"s society, legal action plays an important role in maintaining social order and enforcing laws and regulations. When someone is harmed or wronged, they may bring a lawsuit to seek compensation or justice. However, legal action also has negative impacts on society, such as increasing costs and burdening individuals with legal proceedings. Therefore, it is necessary to strike a balance between protecting rights and maintaining social stability.

In addition, legal action can also promote social progress and innovation by providing a platform for people to express their opinions and grievances through legal means. This can help improve social issues and promote fairness and justice in society. However, it is also important to ensure that legal proceedings are conducted fairly and transparently, so that they do not become a tool for political or personal interests to harm others.

In conclusion, legal action plays an essential role in maintaining social order and promoting social progress, but it also has negative impacts that need to be carefully considered and managed. It is essential to strike a balance between protecting rights and maintaining social stability, while ensuring that legal proceedings are conducted fairly and transparently.