defend against

"defend against"的音标为[dɪˈfend əv(ə)nt]，基本翻译为“防御；捍卫；为…辩护”。速记技巧为：defend（防御）+ against（对抗）→防御…以对抗。

"defend"这个词源可以追溯到古英语中的"defende"，意为“保护”或“防御”。它的词形变化形式主要有复数"defenses"和过去式"defended"以及过去分词"defended"。

相关单词：

1. "defender" - 防御者，保卫者，通常指在战争或冲突中保护自己或他人的人。

2. "defensiveness" - 防御性，通常指一种心理状态，倾向于保护自己，避免冲突或批评。

3. "defensive" - 防御性的，通常指一种策略或措施，旨在保护自己免受攻击。

至于变化形式和相关单词的数量，由于"defend"这个词源和其衍生词在英语中非常常见，因此很难给出一个确切的数量。但是，上述三个单词都是与"defend"相关的常见单词，它们都反映了"defend"的基本含义和词形变化。此外，"defend"还可以衍生出许多其他单词，如"defendant"、"defence"、"defendable"、"undefended"等等，这些单词在英语中都有特定的含义和用法。总的来说，"defend"及其相关单词在英语中非常丰富和多样化。

常用短语：

1. defend oneself

2. defend against attack

3. defend against criticism

4. defend against accusations

5. defend against allegations

6. defend against attackers

7. defend against threats

例句：

1. She defended herself against the accusation of cheating.

2. The police are defending against attackers who are trying to break into the building.

3. We must defend ourselves against the criticisms of others.

4. The company is defending against a lawsuit filed by a competitor.

5. She always defends her friends against any allegations they may face.

6. The government is defending against threats of terrorist attacks.

7. We must always be ready to defend ourselves in case of attack.

英文小作文：

标题：Defending Our Rights and Freedoms

As citizens of a free society, we must always be ready to defend ourselves and our rights and freedoms against any threats. This may include defending against attacks from criminals, government agencies, or even from other individuals who may try to infringe upon our rights and freedoms. We must always remember that we are all equal under the law and that we should not be afraid to stand up for our rights and freedoms when they are threatened. If we do not defend ourselves, who will?

Therefore, we should always be prepared to defend ourselves and our loved ones against any threats, whether it is from external forces or from within ourselves. We must never give up our rights and freedoms for the sake of convenience or fear, because once they are lost, they are very difficult to regain. Let us always remember that we are free people and that we must always defend our freedom and rights against any threats that may come our way.