can

can, tin

这两个名词均有“罐头”之意。
can: 为美国英语，现在英国也用。
tin: 为英国英语。

can, may

这两个情态动词均含有“能，可能，可以”之意。
can: 如果表示体力或智力方面的能力，要用can。can较口语化，比较常用。在表理论上的可能性时，用can，不用may。另外can一般不能用来表将来的可能性，多用在否定和疑问句中表现在的可能性。
may: 多用于正式文体，含尊敬之意。并且may既可表现在又可表将来的可能性。

名词 can:

1. airtight sealed metal container for food or drink or paint etc.
   同义词：tin, tin can
2. the quantity contained in a can
   同义词：canful
3. a buoy with a round bottom and conical top
   同义词：can buoy
4. the fleshy part of the human body that you sit on
   同义词：buttocks, nates, arse, butt, backside, bum, buns, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass
5. a plumbing fixture for defecation and urination
   同义词：toilet, commode, crapper, pot, potty, stool, throne
6. a room or building equipped with one or more toilets
   同义词：toilet, lavatory, lav, john, privy, bathroom

动词 can:

1. preserve in a can or tin
   同义词：tin, put up
2. terminate the employment of
   同义词：fire, give notice, dismiss, give the axe, send away, sack, force out, give the sack, terminate

1. Don't shout into my ears like that, I can hear you perfectly well.
   别那样对我大声嚷嚷，我能听清楚。
2. How can you say that?
   你怎么可以这样说？
3. Can you give me some feedback?
   你能给我一些建议吗？
4. You can count on me.
   你可以指望我。
5. Can you help me?
   你能帮我吗？
6. Can you cook?
   你会烹饪吗？
7. There is only one can of meat left.
   只剩下一听肉了。
8. The fish is canned in the factory.
   鱼在这家厂里装成罐头。

can

v.aux.（助动词）
过去式 could[kôd]

Used to indicate physical or mental ability:
能，会：用于表示身体或精神上的能力：
例句：
I can carry both suitcases. Can you remember the warô
我可以搬动两个箱子。你还能记得那场战争吗

Used to indicate possession of a specified power, right, or privilege:
拥有权利：用于表示拥有某种特殊权力、权利或特权，：
例句：
The President can veto congressional bills.
总统有权否决国会提案

Used to indicate possession of a specified capability or skill:
能力：用于表示具有某种能力或技能：
例句：
I can tune the harpsichord as well as play it.
我会弹奏大键琴，同样地，我也会给大键琴调音

Used to indicate possibility or probability:
可能：用于表示可能性或者或必然性：
例句：
I wonder if my long lost neighbor can still be alive. Such things can and do happen.
我怀疑我失踪已久的邻居是否还有可能活着。这样的事情可能而且确实发生了

Used to indicate that which is permitted, as by conscience or feelings:
允许：用于表示在意识和情感上得到允许的东西：
例句：
One can hardly blame you for being upset.
没有人会因为你受挫而责怪你

Used to indicate probability or possibility under the specified circumstances:
可能性：用于表示在特殊情形下的可能性或者可能的事：
例句：
They can hardly have intended to do that.
他们几乎不可能愿意做那事

Usage Problem Used to request or grant permission:
【用法疑难】 会：用于请求或给予允许：
例句：
Can I be excusedô
我会得到原谅吗

来源：
Middle English [first and third person singular present tense of] connen [to know how]
中古英语 [] connen的第一和第三人称单数现在时 [知道怎样去]
from Old English cunnan * see gnô-
源自 古英语 cunnan *参见 gnô-

Generations of grammarians and schoolteachers have insisted thatcan should be used only to express the capacity to do something, and thatmay must be used to express permission. Technically, correct usage therefore requires
好几代的语法学家们和中学教师们主张can 只应用于表示做某事的能力， 同时may 必须用于表示许可。 因此，在学术上纠正其用法要求
例句：
The supervisor said that anyone who wants an extra day off may (not can ) have one, or
管理人说任何想要一日特别休假的人都可以得到（不是 can ） 一天， 或者

例句：
May (not can ) I take another week to submit the applicationô
我可以（不是 can ） 再花一周提交申请吗？

Only 2 percent of the Usage Panel acceptscan in the latter sentence. Butcan has a long history of use by educated speakers to express permission, particularly in British English.What is more, the blurring of the line betweencan and may is socially and historically inevitable, since politeness often makes the use ofcan preferable in the .permission. sense. For example, the sentenceYou can borrow my car if you like is a more gracious offer than You may borrow my car; the first presumes the granting of permission,while the second makes a point of it.Still, it is understandable that insistence on the use ofmay should become a traditional schoolroom ritual, particularly in first-person requests such as
用法专题使用小组中只有2%的成员接纳can 用于后面一句中。 但can 被受过教育的说话者用于表示许可已有很长的历史， 尤其是在大不列颠英语中。而且，can 和 may 之间不明显的界限从社会和历史渊源上说也是不可避免的， 因为礼貌常使can 的使用比较适宜.允许.这个意义。 例如，句子如你想要的话，你可以借用我的车 是比 你可以借用我的车； 亲切得多的提议， 第一句假定表示许可，而第二句却限定于这一点。然而，主张may 的用法应成为课堂内的惯例也是可以理解的， 尤其是在第一人称中，如
例句：
May I leave the roomô
我可以离开这屋吗？

since it requires the pupil to distinguish explicitly between what is possible and what is allowed,a difference not always apparent to younger children.And even in later life,observance of the distinction is often advisable in the interests of clarity.Thus, the sentenceStudents can take no more than three courses allows the possibility that a student who is unusually capable may take more, whereasStudents may take no more than three courses does not. · The use ofcan to express permission is better tolerated in negative questions, as inCan`t I have the car tonightô probably because the alternative contractionmayn`t is felt to be awkward.
由于这要求学生清楚地区分可能的和得到许可的两者之间的差异，而这对小孩子们常常是不太明显的。并且在其今后的生活中，为明确起见，体会这种差异常常是很可取的。因此，句子学生们可以选修不超过三门的课程 给能力超常的学生学更多的课程提供了可能性， 然而学生们只能选修不超过三门的课程 则不能提供这种可能性。 can 的用法更可用于否定疑问句中表示许可， 如 我今晚不能使用这车吗？ ， 或许是由于可替代的缩写mayn`t 感觉起来有些笨拙的缘故

can
can 2

n.（名词）
A usually cylindrical metal container.
金属制的圆柱形容器

An airtight container, usually made of tin-coated iron, in which foods or beverages are preserved.
罐头：一种不透气容器，常用马口铁制成，可将食物或饮料放于其中保存
The contents of such a container.
罐装物：此种容器内所装的东西
Slang A jail or prison.
【俚语】 监牢，监狱
Slang A toilet or restroom.
【俚语】 厕所，休息室：盥洗室或休息室
Slang The buttocks.
【俚语】 屁股
v.tr.（及物动词）
canned,can.ning,cans
To seal in an airtight container for future use; preserve:
罐装：封于密闭容器内，以备将来所需；保存，贮存：
例句：
canning peaches.
将桃子罐装起来

Slang To make a recording of:
【俚语】 录音：将…记录下来：
例句：
can the audience`s applause for a TV comedy show.
将观众对电视喜剧的喝彩声录制下来

Slang To dismiss from employment or school.See Synonyms at dismiss
【俚语】 解雇，开除：解除雇佣或从学校开除参见 dismiss
Slang To put a stop to; quit:
【俚语】 停止：停止，打住；退出：
例句：
Let`s can the chatter.
让我们停止闲谈吧

来源：
Middle English canne [a water container]
中古英语 canne [盛水的容器]
from Old English
源自 古英语

【引伸】
can.ner
n.（名词）