fill [fil] vt. 装满，填（写）(write)
fill ...with... 使...充满...
fill out/up a form 填表
fill in... 填写..., 替代...
e.g. george is the best(最好的) person to fill this vacancy ['veikənsi]（空缺）.
film[film] n.电影(movie)，薄膜, 胶卷 vt.把...拍成电影
develop a film 冲洗底片
e.g. have you seen any(任何的) good films lately（最近）?
find [faind] vt.（found, found, finding） 找到, 发现(discover)
find out... 发现..., 查明(真相等)
e.g. i find russian grammar（语法） very difficult（困难的）.
finding ['faindiŋ] n. 发现（discovery），（pl.）调查/研究的结果
e.g. the research（研究） findings will be published（公布）next week.
finger ['fiŋgə] n. 手指
keep one’s fingers crossed 祈求成功
green fingers 绿手指，园艺能手
e.g. every finger of hers is dirty.
finish vt.完成(accomplish, complete, fulfill),结束(end) n. 最后阶段， 完成，结束，完美
e.g. i have finished cleaning（使清洁） the room（房间）.
fire ['faiə] n. 火, 火灾 vt. 点燃, 放枪, <口>解雇(dismiss)，着火
catch fire 着火
be on fire 起火， 正兴奋着
set fire to... 点燃...
make a fire 生火
e.g. according to （根据）the law of labour（劳动法）, bosses（老板） can't fire workers at will （任意地）any longer（不再）.
fix [fiks] vt. 固定(install, fit)， 修理(repair, mend)，安排(arrange)， 注目
fix up 安排,修理, 解决
e.g. i asked（要求） the boy to fix the bicycle（自行车）.
flight [flait] n. 飞行，航班，飞机的航程
flight course 航线
flight crew member 机组人员
e.g. did you have a good（愉快的） flight?
flood n. 洪水，水灾 v. 淹没，大量涌到
flood in... 大量地涌到...
flood... with... 使...充满
e.g. there was a flood of complaints（抱怨） from the press（报纸上的报道） about him.
flow [fləu] vi. (液体)流动，飘动(wave) n. 水流(current, stream)气流， 流量
flow away 流走
flow into... 流入...
e.g. her tears（眼泪） flowed fast（很快地） at the bad（怀的） news（消息）.
flower ['flauə] n. 花 v. 开花(bloom)
e.g. it's quite a beautiful flower.
flu [flu:] n. 流感(= influenza)
catch a flu 患了流感
e.g. i caught a flu and had to不得不 lie in the bed.卧床休息
fly [flai] vi. （flew, flown, flying）乘飞机， 飞越， 使飘扬n. 苍蝇
fly a kite 放风筝
fly disease 蝇疾病
fly high 有雄心大志, 情绪高涨
e.g. housework家务 keeps mother on the fly忙碌 all day.
focus ['fəukəs] n. (兴趣活动等的)中心(center)v. 聚焦(concentrate)
focus... on/upon... 把（精力/注意力）集中在…
e.g. you must try to focus your mind(思想) on work（工作） and study（学习）.
fog [fɔg] n. 雾
thick fog 浓雾(一级能见度)
e.g. i was really in a fog 一团糟after the exam.
follow vt.跟随(chase, go after, pursue)，理解(understand, comprehend, catch on)，遵循(comply with, keep to, obey, observe)，从事，注视
as follows 如下
e.g. the children followed their mother into the room（房间）.
food [fu:d] n. 食物, 养料
fast food 快餐
e.g. i like chinese food very much.
foot [fut] n. 足，英尺 脚
stand on one’s feet 站立起来（病后恢复）
on foot 走路
e.g. we decided（决定） to go（去） on foot.
football n. 足球(比赛)
play football 踢足球
football match 足球比赛
e.g. we play football on the grass.草地
force n. 力量(power, strength)，武力(violence) (pl.)军队(army, troop) vt.强迫(compel)
force sb to do sth. 迫使某人做...
put sth into force 使...生效
come into force 生效，实施
e.g. the thief（小偷） took（拿走） the money from the old man by force（用暴力）.