fight off（及物，可分）击退
The garrison fought off the attackers.(or：The garrison fought the attackers off.)卫戍部队击退了进攻者。
We have fought off several enemy assaults.我们击退了敌军几次进攻。
After fighting off the enemy troops，we conquered the town.击败敌军后，我们攻克了这座城。
figure on（及物，不可分）盼望
They figured on him to complete his part of the job.他们指望他完成他自己那部分工作。
He figured on his admittance into that university.他指望被那所大学录取。
That country figured on foreign aid for funds.那个国家靠外援获得资金。
figure out（及物，可分）找到，想出
Bell figured out the answer to the problem.贝尔找到了这个问题的答案。
He couldn't figure out the causes for the failure in his experiment.他找不到实验失败的原因。
The prisoners tried to figure a plan out for escape.囚犯们企图想出一个越狱的计划。
fill in ［up］（及物，可分）填写，堵塞
He filled the rat's hole in.他把老鼠洞堵死了。
You have to fill in another form.你得再填一张表。
Fill in your address at the bottom of the application form.把你的住址填在申请表的下端。
fill in for（及物，不可分）代替
Mr Smith filled in for our coach yesterday.昨天史密斯先生为我们的教练代课。
I don't believe that robbots will fill in for human beings.我不相信机器人会代替人类。
Mike has filled in for Eldon as captain of the team.迈克已取代埃尔登的队长职位。
He filled in for the chairman during the meeting.开会期间他代替主席主持会议。
fill out（不及物）发胖
The baby's cheeks began to fill out.这婴儿的脸蛋丰满起来了。
You'll fill out further if you eat all those sweet potatoes.你要是把那些白薯全吃了，将会更胖。
Despite her dieting，she did not cease to fill out.她尽管节制饮食，还是不断发胖。
fill up（及物，可分）使装满，使充满
The cook filled up the dish.(or：The cook filled the dish up.)厨师把碟子装满了。
The report of the accident fills up a column of that paper.这起事故的报道在那份报上整整占了一栏。
The hall was filled up with audience.大厅里挤满了听众。
find out（及物，可分）发现
Mary eventually found out the truth that her son hadn't been home for two days.(or：Mary eventually found the truth out that her son hadn't been home for two days.)玛丽终于发现了她儿子已两天没回家的事实真相。
He found out that prices were much higher in the city.他发现城里的物价高得多。
They opened the tomb and found out some cultural relics.他们打开坟墓，发现了一些文物。
find...out（及物，必分）揭露（坏人、罪行等）
We will find every evildoer out.我们要揭发所有做坏事的人。
The investigator found him out before he could commit a crime.在他可能犯罪以前，调查员就把他揭发了。
finish off（及物，可分）杀害，消灭
The frost finished off most of the pests.这场霜消灭了大部分害虫。
Cancer of the lung finished her mother off.肺癌要了她母亲的命。
His father was finished off in battle.他父亲死在战场上。
fit up（及物，可分）安装，配备
I must find time to fit up the new switch.我必须找时间把新开关装上。
They tried to fit the mess hall up as a meeting room.他们试图把食堂布置成会议室。
We have fit up two air-conditioners in our house.我家装了两台空调。
fix on ［upon］（及物，不可分）确定，选定
They fixed on Mr George to take over the task.他们选定乔治先生接替那个工作。
They haven't fixed on a date for the ceremony.他们还没有确定举行仪式的日期。
I have fixed on a scenic spot for my holiday this year.我已选定今年休假的景点。
fix up1（及物，可分）修理
George often fixed up his car.乔治经常修理自己的汽车。
He fixed up the broken chair.他把破椅子修好了。
I called him in to fix my television up.我请他来修我的电视机。
The damaged truck can't be fixed up.这辆损坏的卡车没法修了。
fix up2（及物，可分）安排
We fixed up thousands of young people with suitable jobs.我们给几千名青年安排了合适的工作。
We fixed him up for the night at our house.我们为他在我们家过夜做好了安排。
It is fixed up that I'll meet them here.根据安排，我将在这儿跟他们见面。
flake out（不及物）晕倒
This man flaked out；call for the doctor.这个人晕倒了，请医生来。
The patient flaked out from pain.病人痛得昏倒了。
The beggar flaked out from hunger.这个乞丐饿昏了。
flare up（不及物）突然发怒
He flared up to hear those uncomplimentary remarks.他听到那些贬低他的话就发了火。
You shouldn't flare up at trifles.你不应为小事动怒。
fling off ［out］（不及物）愤然离去
The guest flung off without bidding farewell.客人愤然不辞而别。
He had a quarrel with an official and flung off.他跟一位官员争吵后气冲冲地走了。
fold in（及物，不可分）把（作料等）掺进
Fold in the sugar，flour and eggs together.把糖、面粉和鸡蛋拌在一起。
Coffee folded in milk makes a good drink.牛奶里掺咖啡是好饮料。
follow out ［through］（及物，可分）彻底实现［体现］
We have enough money to follow out the experiment.我们有足够的钱把这项试验进行到底。
The patient should follow out the doctor's orders.病人应当听从医生的吩咐。
It is one thing to plan a new building and another to follow the plan out.计划盖一栋大楼是一回事，把计划付诸实施是另一回事。
follow up（及物，可分）采取进一步行动来发展（某事）
Lind followed up her walk with a swim in the pool.林德散步之后紧接着又在池中游泳。
Since we both sides have reached a basic agreement，we should follow it up by dicussing specific articles.既然我们双方已基本达成协议，我们就应该接着讨论具体条款。
fool about ［around］（不及物）闲逛
I've never seen him fooling about on street corners.我从没见他在街头闲逛过。
He fooled about while his mates were busy.别人都在忙，他却闲逛。
The players were just fooling about on court and not really practising.这些运动员只是在球场上闲荡，并不真正练习。
foul up（及物，可分）搞乱
This illness fouls up my holiday plans.这场病打乱了我假期的计划。
Don't foul my clean room up.别把我的干净屋子搞得乱七八糟。
The situation was all fouled up there.那里的情况搞得一片混乱。
freeze over（不及物）冰封
The stream has frozen over，but we can't walk on it.小河已经冰封，但不能在上面走。
During the midwinter the lake freezes over，some people like to skate on it in twos and threes.隆冬时节，湖面冰封，有些人喜欢三三两两地在上面滑冰。
frown on ［upon］（及物，不可分）不同意
My father always frowns on such songs.我父亲一向反对这种歌曲。
The director frowned on my suggestion.主任不同意我的建议。
The people firmly frown on any activities to split their country.人民坚决反对分裂祖国的任何活动。