5.词根fer，表示“携带，承受”

ferry[ˈferi]（fer带来+ry表名词=带来带去的东西渡船）n.渡船，渡口；vt.渡运，渡船

different[ˈdɪfrənt]（dif分开，不同+fer带来+ent表形容词…的=不同的）adj. 不同的；各式各样的；个别的；不平常

offer[ˈɔ:fə(r)]v.&n.拿出；提供

fertile[ˈfɜːrtl] （fert承载+ile-能承载的-）adj.肥沃的，富饶的；多产的；（想象力或创造力）丰富的(A chess player must have a fertile imagination and rich sense offantasy.一个棋手必须有丰富的想象力，并善于奇思妙想。)

fertilizer[ˈfɜːrtəlaɪzər] n.肥料；受精媒介物(The state allotted themlarge quantities of chemical fertilizer.国家给他们调拨了大量化肥。)

ferriage[ˈferɪɪdʒ]n.摆渡，渡船业；摆渡费（Theferriage of the river is neglected.此河的渡船已无人过问。）

differ[ˈdɪfər]vi.不同，异同；在意见方面发生分歧（The two leaders had differed on the issue of sanctions.两位领导人在制裁问题上存在意见分歧。)

differentiate[ˌdɪfəˈrenʃieɪt]（different不同的+i+ate-）vtˌ区分，区别；使有差异vi.区分，区别(When the data were analyzed hierarchically by regions and half-sibfamilies in regionsˌ considerable differentiation wasfound.当按区和区内半同胞家系对数据作谱系分析时，我们发现分化很厉害。)

prefer[prɪˈfɜːr]（ pre预先+fer带来-预先带来更喜欢的事物-）vt.较喜欢，宁可(Does he prefer a particular sort of music?他有特别喜欢的音乐吗？)

refer[rɪˈfɜːr] （re回+fer带-带回原处-）vt.引….参考；让….求助于vi.涉及；指的是；参考。查阅(In his speechˌ he referred to a recent tripto Canada.他在讲演中提到了前不久的加拿大之行。)

suffer[ˈsʌfər] （suf在….下+fer带-带到下面去）遭受，蒙受；忍受，承受vi.受痛苦，患病；受损，变糟(Within a few days she hadbecome seriously illˌ suffering great pain anddiscomfort.几天的时间，她就病得很严重了，疼痛难忍，周身不舒服。)

infer[ɪnˈfɜːr]（in里+fer携带-内在携带可推论而出-）v.推论，推断(I inferred from what she said thatyou have not been well.我从她的话语里推断你身体一直不太好。)

interfere[ˌɪntərˈfɪr]（inter在….之间+fer带+e-带到中间来-）vi.干涉，介入；阻碍，干扰(I wish everyone would stop interfering and just leave me alone.我希望大家都别再来干涉我，让我一个人静一静。)