a bit和a little都作"一点儿"讲,但用法不同。
1)a bit和a little在肯定句中修饰动词、形容词、副词和比较级时可以互换,表示"一点儿"的意思。例如:
The speaker spoke up a bit/a little so as to make himself heard more clearly.
演讲者把嗓门提高了一点儿,以便使别人听得更清楚。
2)a bit和a little在否定句中的意思恰恰相反,not a bit相当于"not at all"(一点儿都不);not a little相当于"very(much)"或"extremely"(很、非常)。例如:
She is not a bit tired.(=She is not tired at all.)她一点都不累。
3)a little可以直接作定语修饰名词,而a bit则要在后面加of构成短语才能作定语,两者都只能修饰不可数名词。例如:
There is a little/a bit of food left for lunch.
午饭只能吃剩下的一点食品了。
4)a bit of的另一种形式是bits of,a little则没有这种变体。例如:Besides this,he used part of an old army wireless set,and some bits of wood.除此之外,他还利用了一部分旧的军用无线电发报机的一部分零件和一些木片。
few, a few, little, a little
虽然都表示“少”，但
（1）few, a few是可数的, little, a little是不可数的。
（2）a few, a little含肯定意味，few, little含否定意味。这里所谓的“肯定意味”和“否定意味”应该这样来理解：同样是半杯水，口渴者会认为：There is little water in the glass. 而不口渴的人则会认为：There is a little water in the glass.
一：
1．few修饰可数名词复数。
2．few (= not many; hardly any)含否定意义；a few (= some; several; a small
number of) 含肯定意义。
3． not a few = no few = quite a few = a good few = many。
4． 当 few受 every, last, past, next, some, very等词所修饰时，表示肯定意义，few之前不再有冠词。如：
In the last few minutes, he checked up his paper again.
It took us some few days to repair the machine.
They are very few in number.
There were too few of them.
He goes to see his grandma every few weeks.
5． 在非正式文体中很少见，一般用或代替，如：
Only a few people attended the meeting.
另外，little / a little
Little remains to be done about it. (作主语)
A little remains to be done.
Please give me a little. (作宾语)
He knows a little of everything.
There is very / but little time left. (作定语)
Don’t worry; you still have a little time.
1． little修饰不可数名词，表示“量”。
2． little含否定意义(反义词：much)；a little含肯定意义(反义词：none)。
3． 在非正式英语中，一般很少用little，常用not much, only a little来代替，如：
We haven’t got much money / time.
maybe是副词，只能作句子中的状语。例：或许他是个学生。Maybe he is a student.
而may be则是两个词，may是情态动词， 使用时必须后接谓语动词；他大概是个学生。He may be a student.
详解
1. maybe 副词，意为“可能”、“也许”，通常用于句首，有时也放在句中或句末；may be 是情态动词“may”加动词“be”，意为“可能是”、“可能在”等。比较以下各组句子，含义相同，但结构不同：
你也许是对的。
正：Maybe you are right.
正：You may be right.
他可能迷路了。
正：Maybe he has lost the way.
正：He may have lost the way.
正：It may be that he has lost the way.
2. 副词 maybe 可单独用作答语，但 may be 不能这样用。如：
A：Do you think he’ll come back? 你认为他会回来吗?
B：Maybe. (Maybe not.) 也许会回来吧(也许不会回来吧)。
Let's和Let us有什么不同
在"Let's"句型中，反意疑问部分要用shall we或shan't we，表示建议；而在”Let us/we”句型中，反意疑问部分要用”will/won't you”，表示请求．
摘＜英语周报＞上面的一段话．
Let's，Let us
1.Let's是Let us的缩写。包括说话人和听话人双方在内，含有催促、建议或请对方一起行动的意思。在听话人表示赞同建议时可只用Let's.如：
---Shall we go by train？
---Yes，let's.
2.当请求对方允许自己（第一人称复数）做某事时，要用Let us，这里的 us 不包括听话对方在内，不能缩写为Let's.
如两个同学对老师说：
Please let us remove the bookshelf for you.
让我俩给你移动一下书架。
3.两者在构成附加疑问句时，方法不同。如：
Let's go to see the film,shall we ?
咱们去看电影，好吗？
Let us go to see the film,will you?
让我们去看电影，好吗？
说明：从以上两句可以看出，当Let's引导祈使句，包括对方在内时（Let us也可），疑问句用shall we,表示征求意见或提建议，当Let us引导祈使句不包括对方在内时，疑问句用will you，表示委婉、客气的请求。
1、 副词的种类
(1) 时间副词 如：ago, before, already, just, now, early, late, finally, tomorrow等
(2) 地点副词 如：here, there, near, around, in, out, up, down, back, away, outside等。
(3) 方式副词 如：carefully, angrily, badly, calmly, loudly, quickly, politely, nervously等。
(4) 程度副词 如：almost, nearly, much, greatly, a bit, a little, hardly, so, very等。
2、 副词比较等级的用法
其用法与形容词相似，只是副词最高级前可省略定冠词。如：
Of all the boys he sings (the) most beautifully.
We must work harder.
3、 某些副词在用法上的区别
(1) already, yet, still
already表示某事物已经发生，主要用于肯定句；yet表示期待某事发生，主要用于否定句和疑问句；still表示某事还在进行，主要用于肯定句和疑问句，有时也可用于否定句。如：
We've already watched that film.
I haven't finished my homework yet.
He still works until late every night.
(2) too, as well, also, either
too, as well和 also用于肯定句和疑问句，too和as well多用于口语，一般放在句末，而also多用于书面语，一般放在句中与动词连用。either用于否定句和否定的疑问句，往往放在句末。如：He went there too.
He didn't go there either.
I like you as well.
I also went there.
(3) hard, hardly
hardly意为"几乎"与hard在词义上完全不同。如：
I work hard every day.
I can hardly remember that.
(4) late, lately
lately意为"最近、近来"，late意为"晚、迟"。如：
He never comes late.
Have you been to the museum lately?
例1 Tom's father thinks he is already ____
A high enough B tall enough
C enough high C enough tall
解析：该题正确答案是B。修饰人高用tall, 而建筑物的高用high,并且enough修饰形容词要放在形容词后面。因此该题选B。
例2 ____ the worse I seem to be.
A When I take more medicine
B The more medicine I take
C Taking more of the medicine
D More medicine taken
解析：该题正确答案为B。"the+形容词比较级+… , the +形容词比较级+…"意为越…，越…。该句意为：吃的药越多，我的病越是加重。
例3"I haven't been to London yet".
"I haven't been there ____".
A too B also C either D neither
解析：该题正确答案为C。A和B都用于肯定句中。D-neither本身意为否定"两者都不"，而C-either则用于否定句中，意为"也"。
例4 Mr Smith was ____ moved at the news.
A deep B deeply C very deep D quite deeply
解析：该题正确答案为B。A. deep用于副词时，修饰具体的深，如dig deep,而B-deeply则修饰表示感情色彩的词，如该题为deeply moved.另如deeply regret等。而D-quite和deeply均为副词，不能互相修饰。
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