a few/a number of/several/some.导航词义：一些

1. a few:adj. 一些，几个.在数量上用于肯定意义，强调有一些，后接复数可数名词。

I have a few friends in New York.

我在纽约有几个朋友。

I have saved a few chocolates for the children.

我留了一些巧克力糖给孩子们。

2. a number of: 许多…，若干….强调数量的概念，也可说 a large/small number of, 后接复数可数名词，谓语动词用复数。

There are a number of chairs in the hall.

大厅里有一些椅子。

A large number of children survived the earthquake.

不少孩子从地震中幸存了下来。

A small number of students at this college are studying electronics.

这所学院里有少数学生在学电子学。

3. several:adj. 几个，数个.相对于 a few，some 而言较为正式，一般只能用于肯定句，强调“不止一两个”，后接复数可数名词。

She raises several pigs.

她养了好几头猪。

After several visits to Beijing, she had learned a little Chinese.

数次访问北京后，她学会了一点汉语。

There are several holes in the wall.

墙上有几个洞。

4. some:adj. 一些，若干.带有不确定性，多用于肯定句中，后接复数可数名词或不可数名词。

Some co-workers attended his party.

一些同事参加了他的聚会。

He has been gone for some time.

他已经离开一段时间了。

He saved some apples for his children.

他给孩子们留了些苹果。

全部

1·There are several conjectures.

有几种推测。《柯林斯英汉双解大词典》

2·Several avenues are open to us.

有几个办法可以供我们选择。《牛津词典》

3·She wrote him several poems.

她为他写了几首诗。《牛津词典》

4·The police made several arrests.

警方逮捕了好几人。《牛津词典》

5·Several cars went off the rails.

有几节火车车厢出轨了。《牛津词典》

6·I copied out several poems.

我抄录了几首诗歌。《牛津词典》

7·Several windows had been smashed.

几扇窗户劈里啪啦打碎了。《牛津词典》

8·He is her elder by several years.

他比她年长几岁。《牛津词典》

9·We were lovers for several years.

我们相爱了好几年。《牛津词典》

10·Several buildings were set alight.

几栋大楼着了火。《柯林斯英汉双解大词典》

几个

1·He's a member of several London clubs.

他是伦敦几个男性俱乐部的会员。《牛津词典》

2·He had spent several hours mixing cement.

他用了几个小时的时间来搅拌水泥。《柯林斯英汉双解大词典》

3·I left my phone number with several people.

我把我的电话号码留给了几个人。《柯林斯英汉双解大词典》

4·We have several vacancies for casual workers.

我们有几个临时工的空缺。《牛津词典》

5·Phil had several unsettling dreams every night.

菲尔每晚都做好几个令他不安的梦。《柯林斯英汉双解大词典》

几

1·I copied out several poems.

我抄录了几首诗歌。《牛津词典》

2·She wrote him several poems.

她为他写了几首诗。《牛津词典》

3·He quietly intoned several prayers.

他静静地吟咏了几段祈祷词。《柯林斯英汉双解大词典》

4·He is her elder by several years.

他比她年长几岁。《牛津词典》

5·The wind flipped over several cars.

大风吹翻了几辆汽车。《牛津词典》

好几个

1·She immediately reeled off several names.

她立即一口气说出了好几个名字。《牛津词典》

2·There are several specific problems to be dealt with.

有好几个特定问题要解决。《柯林斯英汉双解大词典》

3·You seem to have jumped several steps in the argument.

你在论证中似乎略去了好几个步骤。《牛津词典》

4·There are several brands and they're not all the same.

有好几个品牌，不一样的。《牛津词典》

5·We received several answers, and we picked one at random.

我们收到了好几个答案，就随机地拣选了一个。《柯林斯英汉双解大词典》

有几个

1·Several avenues are open to us.

有几个办法可以供我们选择。《牛津词典》

2·Several people were hit by flying glass.

有几个人被飞溅的玻璃击中。《牛津词典》

3·Several people have called in sick today.

今天有几个人打电话请病假。《牛津词典》

4·Several people made speeches at the wedding.

有几个人在婚礼上讲了话。《牛津词典》

5·Several people came forward with information.

有几个人自动站出来提供了信息。《牛津词典》

几项

1·Management have put several new proposals on the table.

管理部门已将几项新的建议提交讨论。《牛津词典》

2·When there are several different assignments, make sure they begin with one they enjoy, so it seems easy to get started.

当有几项不同的作业时，确保他们从自己喜欢的作业开始，这样看起来似乎更容易上手。

3·It will save considerable machining time to use more than one tool in one machine to perform several machine operations either in sequence or simultaneously.

在一台机器上使用数种刀具来顺次或同时进行几项机器操作，将节省大量加工时间。《新英汉大辞典》

4·While Texas does well in some areas, such as producing the greatest amount of wind energy in the country, it performs poorly in several pollution categories.

尽管德克萨斯州在某些方面做的很好，例如风能发电量是美国最大的，但是它在几项环境污染项目上表现一般。

5·And that is why I took several steps upon taking office to better protect the American people.

这就是为什么我在就任后为更好地保护美国人民采取了几项措施。

数个

1·The country appears to be violating several articles of the convention.

该国看来正在违反该公约中的数个条款。《柯林斯英汉双解大词典》

2·Genes also play a role in menopause, and two research teams have identified several gene variants associated with advancing or delaying menopause by as much as two years.

基因对更年期也有影响，而且有两个研究小组发现了数个基因变异体可能导致更年期提前或者推迟能多达两年。

3·I tested this possibility in several studies and it was never borne out.

我在数个研究中测试来这种可能性，一直没有能证实。

4·The new toolbar at the top of the portal page enables you to provide links to several different areas of your portal.

位于门户页面顶部的新工具栏允许您提供到门户的数个不同区域的链接。

5·This is particularly true of large projects that span several organizations.

在涉及到数个组织的大型项目中，情况尤是如此。

几位

1·She ate her sandwich alongside several other office workers taking their break.

她在其他几位正在休息的办公室人员旁边吃自己的三明治。《柯林斯英汉双解大词典》

2·As Apple and several security experts have argued, an order compelling Apple to write software that gives the FBI access to the iPhone in question would establish an unsettling precedent.

正如苹果公司和几位安全专家所主张的，强迫苹果公司编写软件来让联邦调查局访问某 iPhone 的指令，将树立起一个令人不安的先例。

3·As Apple and several security experts have argued, an order compelling Apple to write software that gives the F.B.I. access to the iPhone in question would establish an unsettling precedent.

正如苹果公司和几位安全专家所主张的那样，强迫苹果公司编写软件来让联邦调查局访问某 iPhone 的指令，将树立起一个令人不安的先例。

4·Cecilia Beaux was born in 1854, and after learning to paint and studying with several important artists of the time, Beaux became known as one of the best portrait painters in the United States.

塞西莉亚·博克斯出生于1854年，在学习绘画并师从当时几位重要的艺术家后，博克斯成为美国最佳肖像画家之一。

5·Several tennis stars have had a stab at acting.

几位网球明星曾尝试过演戏。《柯林斯英汉双解大词典》

若干个

1·Finding it (and it may be in any of several directories on a system).

找到程序库(它可能在系统中若干个目录中的任意一个目录中)。

2·In fact, they have several data warehouses.

实际上，他们有若干个数据仓库。

3·Since this program has several features, we will show short proofs for a few of them.

由于这个程序有若干个特性，我们将为其中一些给出简短的证明。

4·Size requirements are obvious, but the ability to bundle several files together is a huge benefit when the only other option is to download one after the other.

文件大小要求很明显，但是当惟一的其他选择是一个接一个地下载时，能够把若干个文件绑定在一起就是一个巨大的优点。

5·Although this article covers several migration issues, I also spend a lot of time showing how to use these new key language features.

本文不但说明了若干个迁移问题，而且还花了一些时间说明如何使用这些新主要语言特性。

几条

1·Several new lines are being built now and will be completed in the near future.

几条新路线正在修建，最近就要完成了。《新英汉大辞典》

2·I have several such rules, but they all just match a literal To: field.

我有几条这样的规则，但它们都仅仅与文字To：域相匹配。

3·Crab body green, the back has a big shell, looked like a warrior wearing armor, the shell of the Central Authorities have several white patterns, I have leaned one of view, looked like a face.

螃蟹全身青绿，背上有一个大大的壳，活像一个身披铠甲的武士，壳的中央有几条白色的花纹，我凑近一看，活像一张脸。

4·Several new high roads are being built.

几条新的高速公路正在建设中。

5·It is reported in the newspaper that several new subway lines in Wuhan. (build).

据报纸报道，武汉正在建设几条新的地铁线路。

(1)in severaladv. 分别地；各个地

(1)several times几次

(1)several people几个人

(1)several liability连带责任；个别责任

(1)joint and several liability连带责任