contrapositive

contrapositive的音标是[ˌkɒntrəˈpɒzɪtɪv]，基本翻译是“反论的；反面论证的”，速记技巧是“反面论证的反面是正面论证”。

Contrapositive这个词的词源可以追溯到拉丁语，意为“相反的，对立的”。它的变化形式主要有比较级more contrapositive和最高级most contrapositively。

相关单词：

1.Contradiction：与原句相反或与常识不符的陈述或行为。

2.Opposite：与某物相反或相对的事物或情况。

3.Converse：相反的，反向的；相反的方面或观点。

4.Reverse：相反的，颠倒的；反向的，倒转的。

5.Antipode：处于地球相对位置的两个人或事物。

6.Contraction：相反的动作或情况；收缩，紧缩。

7.Contrariwise：相反地；以相反的方式或方向。

8.Contraction：收缩，紧缩；减少，削弱。

9.Contrast：对比，对照；差异，不同。

10.Reverse：反转；颠倒；回顾，回顾过去。

在英文中，contrapositive这个词通常用于逻辑学和语法中，表示与原命题相反的命题。这个词的使用可以帮助我们更好地理解逻辑关系，并帮助我们更好地表达和交流思想。

常用短语：

1. "on the contrary"

例句： "On the contrary, I think we should take action to protect the environment."

2. "otherwise"

例句： "If you don"t exercise regularly, otherwise, you"ll end up with health problems."

3. "in other words"

例句： "In other words, we need to find a way to reduce carbon emissions."

4. "conversely"

例句： "Conversely, if we increase the supply of housing, prices will fall."

5. "counterfactually"

例句： "Counterfactually, if we had more resources, we could do more good."

英文小作文：

If we want to protect the environment, we need to take action. On the contrary, we should be aware of the negative impact of our actions on the environment. Otherwise, we may end up with irreversible damage to our planet. In other words, we need to reduce our carbon emissions and adopt sustainable practices to protect our environment. Conversely, if we increase the supply of housing, prices will fall. This means that we can use our resources more efficiently and protect our planet for future generations.

Counterfactually, if we had more resources, we could do more good. However, this is not realistic in the current situation. Therefore, we need to prioritize sustainable practices and reduce our carbon footprint to protect our planet for future generations.