1.function v.運行(to operate)；起作用(to serve)；n．職責(duty)；作用；功能（effect）

發音記憶：“放顆心”--公務員的職責就是讓人民放心--職責

例：The old watch can't function properly.//A major function of self-help networks is financial support.

派生詞：functional(a．起作用的：實用的)：functioning(n.運轉，操作)

2.fundraise n.募捐(raising money)

分拆記憶：fund(資金)+raise(籌集)--籌集資金--募捐

例：The Arnmore Laboratories and Arnmore Research Facilities were founded by Leo and Fontove Arnmore in 1989 after ten years of fundraising.

3.fungi n.（fungus的復數）真菌(any of various of types of plants without leaves ,flowers or green colouring-matter growing on other plants or decaying matter)；突然發生并迅速發展的東西(something taking place suddenly and developing quickly)

發音記憶：“房蓋”--真菌的形狀像房蓋

例：The study shows that the death of those plants is due to insects and fungi.

4.fungus n.真菌，霉菌,菌類

聯想記憶：fun(有趣)+g+us（我們）--我們第一次看到有趣的真菌--真菌

例：Beneath the soil of the Malheur National Forest in eastern Oregon ,a fungus that has been slowly weaving its way through the roots of trees for centuries has become the largest single living organism known to biologists.

5.funnel n.漏斗(a utensil that is usually a hollow cone with a tube extending from the smaller end and that is designed to catch and direct a downward flow)：v.匯集，集中(to move to a focal point)

注意：tunnel (n.隧道)

例：Mary funneled all her efforts into her studies.

6.furnace n.熔爐( an enclosed structure in which heat is produced(as for heating a house or for reducing ore)

例：This furnace is used to melt the iron that will be made into steel.//blast furnace鼓風機

7.tuse v.熔化,熔融 (to reduce to a liquid or plastic state by heat);融臺(to combine, to become blended or joined)

例： Wynton and Branford Marsalis, brothers who have fused the complex rhythms of contemporary jazz with the rollicking musical legacy of their hometown, are fitting symbols of the New Orleans jazz revival.

派生詞： fusion( n.融合:熔化 )

8.fusion n.融合(a union by or as if by melting)；聚變(union of atomic nuclear)

詞根記憶：來自fuse(V.讓融合：熔化)

例：Stars like the Sun can continue to shine steadily for billions of years because its light and heat are produced by nuclear fusion.

同根詞：fusible(a．易熔的：可熔的)

9.futile a.無益的(worthless)；無用的(useless)

聯想記憶：fut=fus(流出，倒出)+ile(能…的)--能倒出去的--無用的

例：The mayor's futile gestures to the angry citizens only angered them further.

同根詞：refute(v．反駁，駁倒)