meira-
英语中有许多此表示“可能”，但归纳起来，无非就三类：
1.情态动词may和can.
2.形容词likely,possible,probable.
3.副词 maybe,perhaps,possibly,probably.
一．情态动词may (might)和can (could)
1． can在肯定句中，表示客观的(理论的)可能性，并不涉及具体某事是否会发生，常可以说明人或事物的特征。要表达具体某事实际，发生的可能性时，不可用can,须用could,may,might 。
如：
(1)A left-luggage office is a place where bags can be left for a short time ,especially at a railway station.[2003全国,28]
行李寄存处，尤其是在火车站，使人们可以短期存放行李的地方。(客观可能性)
(2)Accidents can happen on such rainy days.
这种下雨的天气可能会发生事故.(客观可能性)
(3)Peter may come with us tonight ,but he isn"t sure yet.[1993全国,27]
彼得今晚可能来我们这儿，但还没确定.(实际可能性)
(4)We may go camping next Sunday.
下星期我们可能去野营.(实际可能性)
2． may not 表示“可能不”，can not/can"t表示“不可能”，can(could)可用于疑问意义。
如：
(1)---- Is John coming by train ?
---- He should ,but he may not .He likes driving his car.[2002全国，25](表示“可能不”)
(2)A computer can"t think for itself ;it must be told what to do .[1991全国,15](表示“不可能”)
(3)Mr Bush is on time for everything .How can it be that he was late for the opening ceremony ?[2001上海,27]
试比较：
This can"t be done by him .这不可能是他干的。
This may not be done by him .这可能不是他干的。
Can this be done by him ?这可能是他干的吗?(此处不可用may，may用于疑问句表示“可以”。但此句可以说：Is this likely to be done by him ?)
另外，could ,might并不一定与过去的时间有关，而表示可能性弱于它们相应的现在时形式。
如：
This could/may/might be done by him .这件事有可能是他干的。（语气依次递减）
二、形容词：likely , possible , probable
1．likely是常用词，只“从表面及想来看很有可能”，常用句型: sb./sth be likely to do
It is likely that...
如：
They are likely to become angry with him .
他们可能会对他发怒。
It is likely that he will come.
注意:（1）、 likely表示“有可能成功的”、“有希望的”意思时，不能用另外两词。
e.g What is the likeliest time to find him at home?
什么时候最可能在家里找到他？
（2）、likely在作副词时，前面一定要加very或most.
e.g They"ll very likely ask for an increase in the budget.
他们很可能要求增加预算。
2．possible指“由于有适当的条件和方法，某事可能发生或做到”，强调“客观上有可能”，但常含有“实际希望很小”的意思。
如：
I will do everything possible to help you .
我将尽一切可能帮助你.
常用句型: It is possible for sb. to do something
It is possible that…
e.g It is possible for one man to finish this.
It"s possible that he will accept the terms.
注意:possible不能以人作主语，也不能说make sb. possible,应说make it possible for sb. to do sth.
e.g This made it possible for him to go abroad for further studies.
3 . probable 语气比possible强，指有根据、合情理、值得相信的事物，带有大概、很可能 的意思。
如：
The home team , far ahead , is the probeble winner.
主队份遥遥领先，很可能成为胜利者。
注意: probable也不能以人作主语,也不能用于It is probable for sb. to do sth.句型, 但可用于句型：It is probable that…
e.g It is probable that the winner will get a prize.
另外，这三个形容词likely , possible , probable 都可用于句型：It is +adj.+to do sth./that-clause. It作形式主语。但只有likely可以用于句型：sb./sth be likely to do sth .
如：
(1) It is probable that it will rain today.
今天很可能会下雨。
(第一个it是形式主语，第二个是天气。)
(2) She is the mostgirl to win the prize.
A.possible B.probable C.likely D.perhaps
因为主语是人，所以答案应是C.表示“有希望的”。
试比较：
( ╳) It is probable to rain today.(It指天气)
( √ ) It is likely to rain today.(It指天气)
但可以说：He is impossble to teach.
(=It is impossible to teach him.)
注意：不定式动词与主语存在着逻辑上的动宾关系时，句子才正确。
三、副词：maybe , perhaps , possibly , probably
这四个词都有“可能、或许”的意思，但用法略有不同：maybe和perhaps基本相同，常用于句手，maybe多用于口语。
如：
Maybe/Perhaps the weather will get better.
天气可能会变得好一些。
probable是“很可能”的意思，可能性比其它三个大。probably常与will连用，而possibly常与can,could或may连用，may与possibly连用表示的可能性更小，can/could与possibly连用以加强语气。
另外，quite possibly表示“很有可能”，very/most probably意为“极有可能”。如：
(1) She most/very probably thinks she is right when she says things like that.(极有可能)
(2) Eric"s father is a skilled worker and has repaired a lot of this kind ,so he will succeed in repairing this bike.
A.probably B.maybe C.may be D.perhaps
(A可以和will连用，因此用probably.)
(3)No sooner had she seen the frightening snake than the little girl started to run as fast as shecould .
A. perhaps B.maybe C.possibly D.probably
(和could连用 ，因此用possibly 选择 C )
LuckySXyd-
maybe, possibly, perhaps, probably 这四个词都可表示“可能性”。
maybe：“可能，也许”，比其余的几个词更为随便和不正式，可能性不大，也可以表示一种非常委婉,礼貌的建议或要求。如：You could put it over there, maybe. 也许你可以把它搁在那边。
possibly：“可能地，或者，也许"，可能性较大。用于否定句和疑问句时表示 "无论如何"之意。
She expressed regret for any inconvenience which might possibly be caused.
她为任何可能造成的不便而深表歉意。
perhaps：“可能”，较为常用也较为正式的词，可能性也不十分大。它可以表示建议或要求，也可以表示以礼貌的方式下命令。
Perhaps you will kindly give us a hand when we are in trouble. 当我们陷入困境时，也许你会善意地帮我们一把。
probably：“很可能，大概”，可能性在这一组词中最大，表示一种几乎完全肯定的意思。
He is the only witness of the accident; he can probably give us some detailed information about it. 他是这次事故唯一的目击者，他大概可以告诉我们一些详细情况。
北境漫步-
主要是maybe, perhaps, probably, possibly，likely辨析：
(1)maybe意为“大概，或许”，多用于口语，还可用于礼貌的建议或请求，多用于句首或句末，美国用法。例：
Maybe I"ll go．我或许会去。
(2)perhaps意为“也许，可能，大概”，比较正式，还可用于建议，请求及温和的命令，英国用法。例：
This is perhaps his best novel yet．这也许是他迄今为止写得最好的一部小说。
Perhaps/Maybe you would like to join us for lunch．也许您愿意和我们一块去吃午饭。（表请求）
cou"d better go now，perhaps．您最好还是现在就走。（表命令）
(3)probably意为“大概，很可能”，所表示的可能性比maybe，perhaps实现的可能性大，多与动词连用。
例：John probably told his father all about the matter；he usually tells him everything．约翰很可能把这一切都告诉了他的父亲；他通常对父亲是什么都说的。(表可能性很大)
(4)possibly意为“可能地，也许，或许”，较probably意味弱，在肯定句里表可能性很小;在否定、疑问句中与can，could连用，表示“无论如何也不”，肯定句中与can，could连用，以加强语气，表示“设法，竭力地”。例：
I"ll do it as possibly as I can.我将尽我的所能去做。(与can连用)
I can"t possibly drink any more．我无论如何不能再喝了。
（5）likely
likely是常用词，只“从表面及想来看很有可能”，用作表语时,可接带to的动词不定式或that-clause。常用句型: sb./sth be likely to do
I shall very likely be here again next month.
下个月我很可能再来这儿。
wio-
Reading vocabulary[edit] 阅读词汇
A literate person"s vocabulary is all the words he or she can recognize when reading. This is generally the largest type of vocabulary simply because a reader tends to be exposed to more words by reading than by listening.
Listening vocabulary[edit]听力词汇
A person"s listening vocabulary is all the words he or she can recognize when listening to speech. People may still understand words they were not exposed to before using cues such as tone, gestures, the topic of discussion and the social context of the conversation.
Speaking vocabulary[edit] 表达词汇
A person"s speaking vocabulary is all the words he or she uses in speech. It is likely to be a subset of the listening vocabulary. Due to the spontaneous nature of speech, words are often misused. This misuse – though slight and unintentional – may be compensated by facial expressions, tone of voice.
Writing vocabulary[edit] 写作词汇
Words are used in various forms of writing from formal essays to Twitter feeds. Many written words do not commonly appear in speech. Writers generally use a limited set of words when communicating: for example
nicehost-
过去式
举个例子。he went to Japan yesterday.他昨天去了日本。这表示的是昨天发生的事情，所以用go的过去是went.
过去分词是被动句里使用的。一般构成是was/were+动词的过去分词。它也是表示过去的事情，只不过是被动的意思。
可乐-
can,could,may,might,
Chen-
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