demonstrative的音標為[d??m?nstr?t?v]，基本翻譯為“指示的；示范的；說明的；示威的”，速記技巧為“de-men-strate”。

英文詞源：

demonstrative是一個形容詞，意為“示威的，展示的；表示的，指示的”。它來源于拉丁語demonstratus，意為“展示的，表明的”。

變化形式：

demonstrative在詞性上可以變為名詞形式demonstrator和副詞形式demonstratively。

相關單詞：

1. demonstration（n. 示范，演示）：這個詞表示通過展示或演示來傳授知識或技能的過程。

2. demonstrator（n. 示范者）：這個詞表示在演示中提供幫助或指導的人。

3. demonstrate（v. 展示，顯示）：這個詞表示通過展示或演示來表達某種觀點或情感。

4. demonstrative（adj. 指示的，表示的）：這個詞表示通過指示或表明來傳達信息或觀點。

5. demonstrative pronoun（n. 指示代詞）：這個詞表示用來指示或表明某人或某物存在的代詞。

6. demonstrative adjective（n. 指示形容詞）：這個詞表示用來指示或表明某種性質或特征的形容詞。

7. demonstrative adverb（n. 指示副詞）：這個詞表示用來指示或表明某種行為或情況的副詞。

8. demonstrative case（n. 指示語）：這個詞表示語法上的指示語，用于指示或表明句子中的某個部分。

9. demonstrative sentence（n. 指示句）：這個詞表示具有指示作用的句子，通常用于表達某種觀點或情感。

以上這些單詞都與demonstrative這個單詞有著密切的聯系，它們在不同的語境中有著不同的含義和用法。這些單詞的出現和使用，也反映了英語語言的發展和演變過程。

常用短語：

1. demonstrative pronoun：這個/那個

2. demonstrate sth to sb：向某人展示某物

3. demonstrate one"s ability：展示某人的能力

4. demonstrative adjective：這個/那個的

5. demonstrate sth in action：在實踐中展示某物

6. demonstrate one"s knowledge：展示某人的知識

7. demonstrate one"s skills：展示某人的技能

例句：

1. Can you demonstrate how to use this tool?

2. He demonstrated his ability to solve problems by solving a difficult math problem on the spot.

3. The teacher used demonstrative language to explain the concept of physics.

4. The salesperson demonstrated the product in action, showing how it could be used to save time and energy.

5. She demonstrated her knowledge of foreign languages by speaking fluent French and Spanish.

6. He demonstrated his skills as a chef by preparing a delicious meal for the guests.

英文小作文：

Demonstrative Learning

In life, we encounter many situations where we need to demonstrate something to others. Whether it"s a skill, knowledge, or even a personality trait, demonstrating effectively can help us communicate effectively and build trust with others.

Demonstrating our skills can be a great way to showcase our abilities and prove our worth to others. Whether it"s cooking, speaking a foreign language, or even playing an instrument, demonstrating our skills can help us gain recognition and respect from others.

Demonstrating knowledge can be an effective way to share our expertise with others. Whether it"s explaining a scientific concept, teaching someone a new skill, or even teaching someone how to solve a problem, demonstrating knowledge can help us build bridges of understanding and foster relationships with others.

On the other hand, demonstrating our personality traits can help us connect with others on a deeper level. We all have unique characteristics that set us apart from others, and demonstrating these traits can help us build bridges of empathy and understanding with others.

In conclusion, demonstrating effectively is an essential skill that we all need to master in life. Whether it"s demonstrating our skills, knowledge, or personality traits, demonstrating effectively can help us communicate effectively and build bridges of understanding and trust with others.