and therefore

and therefore的音标是[ənd ˈɔːðə(r)]，基本翻译是“因此，所以”，速记技巧是“前缀and表示‘和’；-or表示‘行为者’”。

"and therefore" 是英语中的连词，表示因果关系。这个词来源于古英语，其词源可以追溯到原始日耳曼语词根"anda"（意为“和”），加上"wurthian"（意为“因此”）。

这个词的变化形式包括：

1. "and"：作为连词，表示并列或连接，没有词形变化。

2. "or"：作为连词，表示选择，可以与"and"互换使用。

3. "therefore"：作为副词，表示因此、所以，来源于拉丁语"therefore"，意为“因此”。

相关单词包括：

1. "because"：表示原因，来源于古英语"becaus"，意为“因为”。

2. "consequently"：表示结果，来源于拉丁语"consequenter"，意为“因此”。

3. "hence"：表示由此，来源于古英语"hens"，意为“由此”。

4. "thus"：表示如此，来源于拉丁语"thus"，意为“这样”。

5. "thereby"：表示由此，可以与"and therefore"互换使用。

以上这些单词都与"and therefore"有密切的关联，它们在不同的语境中表达了不同的含义和用法。

常用短语：

1. therefore (因此)

2. consequently (因此)

3. as a result (因此)

4. for this reason (因为这个原因)

5. in this way (这样)

6. thus (因此)

7. hence (因此)

例句：

1. I failed the exam and therefore I must study harder.

2. She is very intelligent and consequently she always achieves good results in her exams.

3. As a result of the storm, the roads are very slippery.

4. For this reason, we must be very careful when driving in bad weather.

5. In this way, we can improve our English speaking skills.

6. Thus, we must work hard to achieve our goals.

7. Hence, we should always be responsible for our actions.

英文小作文：

标题：The Importance of Being Responsible

Being responsible is an essential quality that everyone should possess. It is important to take ownership of our actions and to ensure that we do not cause harm to ourselves or others. By being responsible, we can avoid making mistakes and learn from our experiences. We can also build trust and credibility with others, which can lead to better relationships and opportunities. Therefore, it is essential to always be responsible for our actions and to take ownership of our mistakes. This will help us to grow as individuals and to achieve our goals.