1.institute v.制定，創立(社團、規章)(to set up; establish);n．學院，協會(an association organized to promote art or science or education)

詞根記憶：in+stitut(建立)+e--創立

例：Gandania cannot afford to institute the proposed laws.

派生詞：institution(n．制度：建立)

同根詞：constitute(v.組成，構建)

2.institution n．(教育、慈善等)社會公共機構(an established organization or foundation, especially one dedicated to education, public service, or culture)；制度，習俗 (a significant practice, relationship, or organization in a society or culture)

例：The financial institutions owe their success to their unique formal organization.

派生詞：institutionalize(v.制度化，習俗化)

3.instruct v.指示(to command)；教育，指導(to teach．to direct)

詞根記憶：in+struct(建造)--指示人如何建造--指示

例：How many years of education were sufficient to instruct young citizens in civic virtue?

派生詞：instruction(n．命令;教導)

4.instrument n.儀器(device)；手段(means)；工具(tool implement)

例：optical instrument光學儀器//financial instrument金融手段

派生詞：instrumental(a．起作用的)

5. insulate v.(from, against）使絕緣（尤指熱量、電流等） （to prevent the passage of heat, electricity ,or sound into or out of especially by surrounding with a nonconducting material.

詞根記憶：insul(島)+ate--成為島一樣--絕緣

例：How do they manage to insulate against loss off body heat in such a cold condition?

6.insulin n．胰島索

例：Diabetes(糖尿病)can result from an insulin deficiency.

Activity is the only road to knowledge.

行動是通往知識的唯一道路。

--英國劇作家肖伯納(George Bernard Shaw, British dramatist)