1.supply 动词指“供给，补充，弥补 ,提供”
动词句型：supply sb. with sth.或supply sth. to sb. 例如：Our farm supplies the market with fruits and vegetables. 我们的农场为市场提供水果和蔬菜。
We are well supplied with foods. 我们的食品供给充足。
V .供应；提供 give or sell something that someone needs
The electricity company supplies electricity to houses.
电力公司向各家供应电力。
These trees supply shade in summer.
夏天这些树提供一片阴凉地方。
Canada and Australia supply England with food.
加拿大和澳大利亚向英国供应食品。
动词 v. 填补；补充
fill
This book will be very useful;it will supply a need that has been felt for years.
这本书很有用；它将满足人们多年来的需要。
supply 还可作名词n.[C] 供应（量），供给（量）
the act of supplying or the amount of something supplied
We have a great supply of meat.
我们有大量的肉类供应。
2.provide
动词 v. 供给；供应 This has provided valuable data for work in soil improvement.
这为土壤改良工作提供了宝贵资料。
I';ll provide food for the picnic.
我提供野餐吃的食物。
If you want to go camping, we can provide you with a tent.
如果你们去野营，我们可以提供给你们一顶帐篷
You must be provided with warm clothes for the winter.
你必须准备好暖和的衣服过冬。
动词 v. 准备；做必须之事；防备
make ready,do what is necessary; take steps to preserve oneself from
In our plans for the journey, we have provided for possible accidents.
在旅行计划中，我们为可能发生的意外事件作了适当的准备。
They had already provided against the attack.
他们已做好应付进攻的准备。
provide 提供,供给;是比较常用的，可以提供任何东西。
句型：provide sb. with sth.或provide sth. for sb. 例如：
She managed to provide her children with food and clothing. 她设法使她的孩子有饭吃,有衣穿。
解析：provide和supply 都可作“供给”解，当指供给具体的实物时，两者往往可以通用。
这两个词可用于provide /supply sb.with sth.和provide sth for sb. ; supply sth. to sb.结构。
The provided/supplied us with all the books we need.
The school provided /supplied food for/to the students.
provide 还可以指提供经验、机会、帮助等抽象概念，而supply的宾语只能是具体的物品。
We are going to provide them with experience.
Was he able to provide you with the information.
Our teachers provided us with guidance.
provide sb. with sth.=provide sth. for sb.意为提供，是比较常用的，可以提供任何东西
句型：supply sb. with sth/supply sth. to sb.也是提供，多指提供日常必需品，或武器装备等offer sb. sth.offer sth. to sb.意为提供，多指提供帮助等afford1.买得起，afford sth.例：i cannot afford a new car2.提供，给与 afford sb. sth.例：your presence will afford us great pleasure你的光临将给与我们莫大的荣幸.
3.offer 指“提出，提供，呈现，出价”，表示向别人提供可接受也可拒绝的某物，如帮助、服务或物品，这可能是对方要求也可能是自己主动提出的。offer 有主动提供的意思 例如：He offered me a job, but I didn't accept.
offer
及物动词 vt. 奉送；拿出
hold something that you want to give to someone
He offered me a cup of tea.
他倒了杯茶要我喝。
They offered me a better position.
他们给了我一个更好的位置。
He offered his life to his country.
他把生命献给祖国。
及物动词 vt. 许诺；提供
say that you will give,do, or pay something if the other person wants it
Xiao Yang offered a suggestion.
小杨提了一个建议。
I';ll offer to go if nobody will.
如果没人愿去的话，那我很乐意去。
He offered himself as an interpreter.
他毛遂自荐作一名译员。
He offered to lend me his bike.
他主动提出要把自行车借给我。
They all came to offer congratulations.
他们都来表示祝贺。
及物动词 vt. 给；做
give,make
He offered no answer.
他没回答。
及物动词 vt. 出售
present for sale
They offered their boat for sale for 2,000 dollars.
他们把船拿来出售，索价2,000美元。
I offered him a house for 1,000 pounds.
我提出愿以一千英镑把一所房子卖给他。
不及物动词 vi. 显示；出现
show itself, appear
No occasion offered.
没有机会。
offer sb. as first prize
作为头等奖授于某人
offer goods at low prices
低价出售货物
offer sb.the radio for 50 yuan
愿以50元把这收音机出卖给某人
offer oneself to the state
为国家献身
gratuitously offer
无偿地提供
be specially offered
被专门地提供
可数名词 n.[C] 提供；提出；提议
the act of offering
I made him an offer of help.
我向他表示愿意提供帮助。
She has received an offer of marriage.
有人向她求婚。
Thank you for your offer of help.
谢谢你要提供的帮助。
可数名词 n.[C] 出售
putting forward for sale
The house is on offer.
这所房子出售。
可数名词 n.[C] 出价
a suggestion
He made me an offer of 500 pounds for the house.
他出价五百英镑要买我那所房子。
句型：offer sb to do sth =offer sb sth
4.afford 指“提供，供给”，还可以特指经济能力，负担得起。例如：I think I can afford this. 我认为我可以负担得起。
afford 特指经济能力，负担得起，买得起。指有（经济或时间）条件（做某事）。常与情态动词can, could, be able to连用，后接不定式,名词或代词，例如：We can’t to buy tickets to the concert.我们买不起听音乐会的票。
I’m afraid I can’t afford too much money on books. 恐怕我们付不起太多的钱买书。
句型：afford to do sth =afford sb sth
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