📚 1. flee
/fliː/
v. 逃跑；逃离
例句：The villagers fled from the fire.
📚 2. fleece
/fliːs/
n. 羊毛；羊毛外套
v. 欺诈；敲诈
例句：Tourists were fleeced by fake guides.
📚 3. fleet
/fliːt/
n. 舰队；车队
adj. 快速的
例句：A fleet of ships entered the harbor.
📚 4. flesh
/fleʃ/
n. 肉；肌肉；肉体
例句：The knife cut into the flesh.
📚 5. fleshy
/ˈfleʃi/
adj. 多肉的；肉质的
例句：The plant has fleshy leaves.
📚 6. flexibility
/ˌfleksəˈbɪləti/
n. 灵活性；柔韧性
例句：Flexibility is important in negotiations.
📚 7. flexible
/ˈfleksəbl/
adj. 灵活的；可变通的
例句：She has a flexible working schedule.
📚 8. flicker
/ˈflɪkə(r)/ (英) / /ˈflɪkər/ (美)
v. 闪烁；摇曳
n. 闪光
例句：The candle flickered in the wind.
📚 9. flight
/flaɪt/
n. 飞行；航班；逃跑
例句：Her flight was delayed.
📚 10. fling
/flɪŋ/
v. 猛扔；急伸
n. 短暂的尝试/恋情
例句：He flung the door open.
📚 11. float
/fləʊt/ (英) / /floʊt/ (美)
v. 漂浮；飘动
n. 漂浮物
例句：Leaves floated on the water.
📚 12. flock
/flɒk/ (英) / /flɑːk/ (美)
n. （鸟、羊）群；人群
v. 蜂拥而至
例句：Tourists flocked to the beach.
📚 13. flood
/flʌd/
n. 洪水；大量
v. 淹没；涌入
例句：The river flooded the town.
📚 14. floor
/flɔː(r)/ (英) / /flɔːr/ (美)
n. 地板；楼层
v. 使震惊；击倒
例句：She lives on the third floor.
📚 15. flour
/ˈflaʊə(r)/ (英) / /ˈflaʊər/ (美)
n. 面粉
例句：Add flour and mix well.
📚 16. flourish
/ˈflʌrɪʃ/
v. 繁荣；兴旺；挥舞
n. 华丽动作
例句：The business continues to flourish.
📚 17. flow
/fləʊ/ (英) / /floʊ/ (美)
v. 流动；流畅进行
n. 流动
例句：Tears flowed down her face.
📚 18. flower
/ˈflaʊə(r)/ (英) / /ˈflaʊər/ (美)
n. 花；精华
v. 开花；繁盛
例句：The roses are beginning to flower.
📚 1. flu
/fluː/
n. 流行性感冒
例句：She was absent from work because of the flu.
📚 2. fluctuate
/ˈflʌktʃueɪt/
v. 波动；起伏不定
例句：Prices fluctuate with market demand.
📚 3. fluctuation
/ˌflʌktʃuˈeɪʃn/
n. 波动；起伏
例句：There are wide fluctuations in temperature.
📚 4. fluency
/ˈfluːənsi/
n. 流利；流畅
例句：Fluency in English is required for the job.
📚 5. fluent
/ˈfluːənt/
adj. 流利的；流畅的
例句：She is fluent in three languages.
📚 6. fluid
/ˈfluːɪd/
n. 液体；流体
adj. 流动的；不固定的
例句：Language is fluid and constantly changing.
📚 7. flush
/flʌʃ/
v. 冲洗；（脸）泛红
n. 脸红；冲洗
adj. 富足的
例句：She flushed with embarrassment.
📚 8. flute
/fluːt/
n. 长笛
例句：He plays the flute beautifully.
📚 9. flutter
/ˈflʌtə(r)/ (英) / /ˈflʌtər/ (美)
v. 飘动；振翅；心跳加速
n. 颤动
例句：Leaves fluttered in the breeze.
📚 10. flux
/flʌks/
n. 不断变化；动荡
例句：The country is in a state of flux.
📚 11. fly
/flaɪ/
v. 飞；飞行；逃走
n. 苍蝇
例句：Birds fly south in winter.
📚 12. foam
/fəʊm/ (英) / /foʊm/ (美)
n. 泡沫
v. 起泡；冒泡
例句：The waves foamed against the rocks.
📚 13. fob
/fɒb/ (英) / /fɑːb/ (美)
v. 敷衍；欺骗
📌 常见搭配：fob sb off（敷衍某人）
例句：He tried to fob me off with excuses.
📚 14. focus
/ˈfəʊkəs/ (英) / /ˈfoʊkəs/ (美)
n. 焦点；中心
v. 集中；聚焦
例句：Please focus on your studies.
📚 15. fodder
/ˈfɒdə(r)/ (英) / /ˈfɑːdər/ (美)
n. 饲料；素材（比喻）
例句：The story provided fodder for gossip.
📚 16. foe
/fəʊ/ (英) / /foʊ/ (美)
n. 敌人；对手
例句：They faced a powerful foe.
📚 1. flu
/fluː/
n. 流行性感冒
例句：She was absent from work because of the flu.
📚 2. fluctuate
/ˈflʌktʃueɪt/
v. 波动；起伏不定
例句：Prices fluctuate with market demand.
📚 3. fluctuation
/ˌflʌktʃuˈeɪʃn/
n. 波动；起伏
例句：There are wide fluctuations in temperature.
📚 4. fluency
/ˈfluːənsi/
n. 流利；流畅
例句：Fluency in English is required for the job.
📚 5. fluent
/ˈfluːənt/
adj. 流利的；流畅的
例句：She is fluent in three languages.
📚 6. fluid
/ˈfluːɪd/
n. 液体；流体
adj. 流动的；不固定的
例句：Language is fluid and constantly changing.
📚 7. flush
/flʌʃ/
v. 冲洗；（脸）泛红
n. 脸红；冲洗
adj. 富足的
例句：She flushed with embarrassment.
📚 8. flute
/fluːt/
n. 长笛
例句：He plays the flute beautifully.
📚 9. flutter
/ˈflʌtə(r)/ (英) / /ˈflʌtər/ (美)
v. 飘动；振翅；心跳加速
n. 颤动
例句：Leaves fluttered in the breeze.
📚 10. flux
/flʌks/
n. 不断变化；动荡
例句：The country is in a state of flux.
📚 11. fly
/flaɪ/
v. 飞；飞行；逃走
n. 苍蝇
例句：Birds fly south in winter.
📚 12. foam
/fəʊm/ (英) / /foʊm/ (美)
n. 泡沫
v. 起泡；冒泡
例句：The waves foamed against the rocks.
📚 13. fob
/fɒb/ (英) / /fɑːb/ (美)
v. 敷衍；欺骗
📌 常见搭配：fob sb off（敷衍某人）
例句：He tried to fob me off with excuses.
📚 14. focus
/ˈfəʊkəs/ (英) / /ˈfoʊkəs/ (美)
n. 焦点；中心
v. 集中；聚焦
例句：Please focus on your studies.
📚 15. fodder
/ˈfɒdə(r)/ (英) / /ˈfɑːdər/ (美)
n. 饲料；素材（比喻）
例句：The story provided fodder for gossip.
📚 16. foe
/fəʊ/ (英) / /foʊ/ (美)
n. 敌人；对手
例句：They faced a powerful foe.
📘 1. fog
/fɒɡ/ (英) / /fɑːɡ/ (美)
n. 雾；迷惑
v. 使模糊；使困惑
例句：A thick fog covered the city.
📘 2. foggy
/ˈfɒɡi/ (英) / /ˈfɑːɡi/ (美)
adj. 有雾的；模糊的
例句：It was a foggy morning.
📘 3. fold
/fəʊld/ (英) / /foʊld/ (美)
v. 折叠；合拢
n. 折痕
例句：Fold the paper in half.
📘 4. foliage
/ˈfəʊlɪɪdʒ/ (英) / /ˈfoʊlɪɪdʒ/ (美)
n. （总称）树叶；植物叶子
例句：The autumn foliage is beautiful.
📘 5. folk
/fəʊk/ (英) / /foʊk/ (美)
n. 人们；民间
adj. 民间的
例句：Folk music reflects traditional culture.
📘 6. follow
/ˈfɒləʊ/ (英) / /ˈfɑːloʊ/ (美)
v. 跟随；遵循；理解
例句：Please follow the instructions.
📘 7. follower
/ˈfɒləʊə(r)/ (英) / /ˈfɑːloʊər/ (美)
n. 追随者；信徒
例句：He has many followers online.
📘 8. following
/ˈfɒləʊɪŋ/ (英) / /ˈfɑːloʊɪŋ/ (美)
adj. 接下来的
prep. 在……之后
n. 拥护者
例句：The meeting is scheduled for the following week.
📘 9. follow-up
/ˈfɒləʊ ʌp/ (英) / /ˈfɑːloʊ ʌp/ (美)
n. 后续；跟进
adj. 后续的
例句：A follow-up call was made.
📘 10. fond
/fɒnd/ (英) / /fɑːnd/ (美)
adj. 喜爱的；溺爱的
例句：She is fond of classical music.
📘 11. food
/fuːd/
n. 食物
例句：Healthy food is essential.
📘 12. foodstuff
/ˈfuːdstʌf/
n. 食品；食料
例句：Foodstuffs are in short supply.
📘 13. fool
/fuːl/
n. 傻瓜；愚人
v. 欺骗；愚弄
例句：Don’t be a fool.
📘 14. foolish
/ˈfuːlɪʃ/
adj. 愚蠢的；不明智的
例句：It was foolish to ignore the warning.
📘 15. foot
/fʊt/
n. 脚；底部
v. 支付（账单）
例句：He hurt his foot.
📘 16. football
/ˈfʊtbɔːl/ (英) / /ˈfʊtbɔːl/ (美)
n. 足球；橄榄球（美）
例句：He plays football every weekend.
📘 17. footing
/ˈfʊtɪŋ/
n. 立足点；基础；地位
例句：They are now on an equal footing.
📘 18. footstep
/ˈfʊtstep/
n. 脚步声；足迹
例句：I heard footsteps behind me.
📘 1. for
/fɔː/ (英) / /fɔːr/ (美)
prep. 为了；给；因为；持续（时间）
conj. 因为
例句：This gift is for you.
📘 2. forbid
/fəˈbɪd/ (英) / /fərˈbɪd/ (美)
v. 禁止；不准
派生：forbade（过去式），forbidden（过去分词）
例句：Smoking is forbidden here.
📘 3. forbidden
/fəˈbɪdn/ (英) / /fərˈbɪdn/ (美)
adj. 被禁止的
例句：This area is forbidden to enter.
📘 4. force
/fɔːs/ (英) / /fɔːrs/ (美)
n. 力；武力；势力
v. 强迫
常考搭配：by force，force sb to do
例句：They forced him to resign.
📘 5. fore
/fɔː/ (英) / /fɔːr/ (美)
adj./adv. 在前部的；向前
例句：The fore part of the ship was damaged.
📘 6. forecast
/ˈfɔːkɑːst/ (英) / /ˈfɔːrkæst/ (美)
n. 预测；预报
v. 预测
例句：The weather forecast predicts rain.
📘 7. forefather
/ˈfɔːfɑːðə(r)/ (英) / /ˈfɔːrfɑːðər/ (美)
n. 祖先
例句：Our forefathers built this city.
📘 8. forefinger
/ˈfɔːˌfɪŋɡə(r)/ (英) / /ˈfɔːrˌfɪŋɡər/ (美)
n. 食指
例句：He pointed with his forefinger.
📘 9. foregoing
/ˈfɔːɡəʊɪŋ/ (英) / /ˈfɔːrɡoʊɪŋ/ (美)
adj. 前述的
例句：The foregoing examples illustrate the point.
📘 10. forehead
/ˈfɒrɪd/ (英) / /ˈfɔːrhed/ (美)
n. 额头
例句：Sweat ran down his forehead.
📘 11. foreign
/ˈfɒrɪn/ (英) / /ˈfɔːrɪn/ (美)
adj. 外国的；陌生的
常考搭配：foreign language / policy / trade
例句：She speaks three foreign languages.
📘 12. foreigner
/ˈfɒrɪnə(r)/ (英) / /ˈfɔːrɪnər/ (美)
n. 外国人
例句：Foreigners are welcome here.
📘 13. foreman
/ˈfɔːmən/ (英) / /ˈfɔːrmən/ (美)
n. 工头；领班
例句：The foreman supervised the workers.
📘 14. foremost
/ˈfɔːməʊst/ (英) / /ˈfɔːrmoʊst/ (美)
adj./adv. 最重要的；最前面的
例句：Safety is our foremost concern.
📘 15. foresee
/fɔːˈsiː/ (英) / /fɔːrˈsiː/ (美)
v. 预见；预料
派生：foreseen（过去分词）
例句：I didn’t foresee any problems.
📘 forest
/ˈfɒrɪst/ (英) / /ˈfɔːrɪst/ (美)
n. 森林
派生：forested adj.
搭配：rain forest, forest fire
例句：The forest covers half the island.
📘 forestry
/ˈfɒrɪstri/ (英) / /ˈfɔːrɪstri/ (美)
n. 林业；森林管理
例句：Forestry plays a key role in the economy.
📘 foretell
/fɔːˈtel/ (英) / /fɔːrˈtel/ (美)
v. 预言；预示
派生：foretold / foretold
同义：predict
例句：The signs foretold disaster.
📘 forever
/fərˈevə(r)/ (英) / /fərˈevər/ (美)
adv. 永远；长期
例句：Nothing lasts forever.
📘 forge
/fɔːdʒ/ (英) / /fɔːrdʒ/ (美)
v. 伪造；锻造；艰难形成
n. 锻炉
搭配：forge documents / forge a relationship
例句：He forged the signature.
📘 forgery
/ˈfɔːdʒəri/ (英) / /ˈfɔːrdʒəri/ (美)
n. 伪造；伪造品
例句：The painting turned out to be a forgery.
📘 forget
/fəˈɡet/ (英) / /fərˈɡet/ (美)
v. 忘记
派生：forgot / forgotten
反义：remember
例句：Don’t forget to call me.
📘 forgive
/fəˈɡɪv/ (英) / /fərˈɡɪv/ (美)
v. 原谅；宽恕
派生：forgave / forgiven
搭配：forgive sb for sth
例句：She forgave him his mistake.
📘 fork
/fɔːk/ (英) / /fɔːrk/ (美)
n. 叉；岔路
v. 分叉
例句：Take the left fork in the road.
📘 form
/fɔːm/ (英) / /fɔːrm/ (美)
n. 形式；表格
v. 形成
派生：formation
搭配：in the form of
例句：A new idea began to form.
📘 formal
/ˈfɔːməl/ (英) / /ˈfɔːrməl/ (美)
adj. 正式的；正规的
反义：informal
例句：Formal dress is required.
📘 formality
/fɔːˈmælɪti/ (英) / /fɔːrˈmælɪti/ (美)
n. 正式手续；礼节
例句：The meeting was a mere formality.
📘 format
/ˈfɔːmæt/ (英) / /ˈfɔːrmæt/ (美)
n. 格式
v. 格式化
例句：Please follow the required format.
📘 formation
/fɔːˈmeɪʃn/ (英) / /fɔːrˈmeɪʃn/ (美)
n. 形成；构成；队形
例句：The formation of clouds was rapid.
📘 former
/ˈfɔːmə(r)/ (英) / /ˈfɔːrmər/ (美)
adj. 以前的
n. 前者
例句：He is a former teacher.
📘 formerly
/ˈfɔːməli/ (英) / /ˈfɔːrmərli/ (美)
adv. 以前
例句：The building was formerly a bank.
📘 formidable
/ˈfɔːmɪdəbl/ (英) / /ˈfɔːrmɪdəbl/ (美)
adj. 可怕的；强大的
同义：powerful, daunting
例句：She faced a formidable opponent.
📘 formula
/ˈfɔːmjʊlə/ (英) / /ˈfɔːrmjələ/ (美)
n. 公式；方法
复数：formulae / formulas
例句：There is no magic formula for success.
📘 formulate
/ˈfɔːmjʊleɪt/ (英) / /ˈfɔːrmjəleɪt/ (美)
v. 制定；系统表达
例句：They formulated a new policy.
📘 formulation
/ˌfɔːmjʊˈleɪʃn/ (英) / /ˌfɔːrmjəˈleɪʃn/ (美)
n. 制定；表述
例句：The formulation of rules took months.
📘 forsake
/fəˈseɪk/ (英) / /fərˈseɪk/ (美)
v. 抛弃；放弃
派生：forsook / forsaken
同义：abandon
例句：He forsook his old habits.
❄🌸Snow Cherry Blossom🌸❄ 