几个英语小问题

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。

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must是情态动词，直接加动词原形，若出现must to be done 的话，就是表示被动，意为“必须被做……”
Must用法全接触

一、表“必须”。
You must talk to them about their study.你必须同他们谈谈关于他们学习的事。

二.在否定结构中表不许。

You mustn't leave here.你不能离开这儿。

三.表坚定的建议。

You must come and see us as soon as you get to Shanghai.一到上海你得马上来看我们。

四.表推测，暗含有很大的可能性，用在肯定句。

He must be ill. He looks so pale.他肯定是病了。他的脸色那么苍白。

注意：

may 暗含的可能性较小。must 暗含的可能性较大。否定的猜测用can't

The baby can't be ill. He is so active.那宝宝不大可能是病了。他那么活跃。

五.关于must的简短回答：

Must I clean the dining room at once? 我必须马上打扫膳厅吗？

Yes, you must. 是的。

No, you needn't.不必马上打扫。（No, you don't have to.）
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look after 与take care of 的用法区别?

答：take care of作“照顾、照料”解，相当于look after. 如：
① I believe that neighbors can take care of your son while you are out.
相信我外出期间我的邻居们会照顾我的儿子的。
② The boy is very young. He can’t take care of himself. 这男孩很小，不可以照顾自己。
take care of作“保管、保护”解。如：
① The teacher told the students to take care of the new books.
老师告知学生要保护好新书。
② Can you take care of your thing？ 你会保管你的物品吗？
★take care of与look after都能作“照顾、照料”解，可以互相替换。但look after没有“保管、保护”的意思。如：
① She stayed at home and took care of her mother yesterday.
＝She stayed at home and looked after her mother yesterday.
昨天她呆在家里照料她母亲了。
② Who is going go take care of the wounded person in the hospital?
＝Who is going to look after the wounded person in the hospital？
谁去医院照料那个受伤的人？
③ Children must take good care of their eyes.
≠Children must look after their eyes well.
孩子们要好好保护眼睛。
★take good care of和look after…well意义相同，都是“好好照料、好好照顾”的意思。
但要注意，take care of用的是good一词，而look after则用well。如：
① Don’t worry. I can take good care of your pet while you are away.
＝Don’t worry. I can look after your pet well while you are away.
放心，你不在时，我会照料好你的宠物的。
② The nurses took good care of the children.
＝The nurses looked after the children well.
保育员把孩子照料得很好。
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slow 与slowly的用法区别

两者都可表示“慢”，但slow通常只与少数动词(如 go, drive, pass, climb, run, walk 等)连用，且应置于其后；而slowly则用法较广，且可置于动词之前或之后，有时还可置于句首。如：摘自www.nmet168.com

He walked slowly [slow] up the path. 他沿着那条小路慢慢地走着。

She slowly opened the door. 她慢慢地把门打开。

Slowly, things began to improve. 情况渐渐有了好转。

Negotiations were going slowly, and not well. 谈判进展缓慢，也不顺利。

It is a good habit to eat slowly. 吃东西慢一点是好习惯。

He walked slowly past the house. 他从屋旁慢慢走过。

The balloon rose up slowly into the air. 气球冉冉升入空中。

Then the audience dispersed slowly. 然后观众慢慢散去。

【注】在某些特殊句型(如感叹句等)中，slow也可放在主语之前。如：

How slow [slowly] the time passes! 时间过得真慢!

The slower you drive, the safer you are. 车开得越慢就越安全。

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wait for 后面加名词性质的东西 比如:
wait for sb.
wait for your coming..
只要是名词性质的 也就是说包括动名词 ing分词都可以
因为for是介词
这里的how long是状语 时间状语 修饰wait 不是它的宾语 所以不要加for 你硬要加的话for后面再加个名词的东西

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try to do 表示“努力做某事”而try doing 表示“试着做某事”如：

He tried to work out the problem.

他努力要解出这道题目。

Why don”t you try changing a way?

为什么你不试着改变一种方法呢？

why not是一种习语后面省略了前面指代的内容，用法：why not + do
why don't you +do 这里的do是助动词必须加实义动词，而why do you not try …? 没有这种用法

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一、find意为"发现、发觉"

作此意解时,其后接宾语+宾补(分词、形容词、副词、名词、介词短语或to be)。作宾补的动词用现在分词还是过去分词取决于动词同宾语之间的关系。

A group of children were found playing on the playground. 有人发现一群孩子正在操场上玩耍。

We have found him (to be) a dishonest person. 我们发现他是一个不诚实的孩子。

I find it necessary to get a map while traveling. 我感到旅行的时候有必要搞到一张地图。

二、find意为"找到、寻找"

应当注意,find作"找到,寻找"解时,侧重寻找的结果;而look for则侧重寻找的过程。

I lost my cellphone this morning. I've been looking for it ever since, but I haven't found it.今天上午我把手机丢了。从那时起我就一直在找,可是到现在还没找到。

三、find后接从句

find后可接that-clause,表示"发现一个事实、道理"。

He found that some of the natives knew his language. 他发现有几个本地人懂他的语言。

四、find,discover 及invent的区别

find和discover均可用于指偶然发现或通过研究的发现。find是较非正式用词,表示找到或发现的意思。discover指通过有意识地寻找或查询,发现某种已经存在的现象或事物。invent则表示发明以前不存在的东西。

Please find my hat for me. 请把我的帽子找来给我。

It was Columbus who discovered America in 1492.就是哥伦布在1492年发现了美洲。

Alexander Bell invented the telephone in 1876. 亚历山大?贝尔在1876年发明了电话。

五、find构成的常用短语

find oneself(发现自己真实的能力、性格等);find fault with(抱怨;挑剔);find one's way to(设法到达)等。

The manager is always finding fault with my work. 经理总是对我的工作吹毛求疵。

I hope you can find your way home. 我希望你能找到回家的路。

一点
必须
照顾
慢的
等待
尝试
找到