og 107 -一个简单的问题

107. Downzoning, zoning that typically results in the reduction of housing density, allows for more open space in areas where little water or services exist.

(A)  little water or services exist

(B)   little water or services exists

(C)  few services and little water exists

(D)  there is little water or services available

(E)   there are few services and little available water

C)  few services and little water exists

我认为如果把“exists"改成"exist" 应该就是正确选项了。而且我同意paopao的说法，there be 句型是看be 后面的真正主语，并由其决定动词单复数形式，这句话里主语是few services and little available ，由“and" 连接的两个名词，不管单复数，所以需用动词的复数形式are.

怎样知道这里service和water要作为一个整体来看呢？如果这点区分不出来，就会选C了，exists。

请教--

本题考点：

1.          形容词little 修饰不可数名词mass nouns; 形容词few修饰可数名词count nouns; ABD用little修饰可数名词services错。

2.          compound subject : When two nouns or groups of nouns are joined by and, they’re called a compound subject and are therefore plural.

复合主语：当主语是由2个或一组名词由and连接构成时，主语的number为复数。

Compound subject是主谓一致subject-verb agreement的一个重要考点，本题复合主语“services and water” 根据主谓一致原则，需要复数的动词，所以单数动词exists(in B and C)和 is (in D) 都是错误的.

3．There be 结构

在说明或询问人、物的存在时即可用there be结构。说There’s a man at the door 比说A man is at the door更合乎习惯，也更自然。

本题要表达的是open space in areas有few services and little available water的存在，故用there be结构比直接说water and services exist复合语言习惯。ABC错。

把本题所有的讨论都看完了,现在回过头来就是要确认下列几组句子,哪些是正确的,NN们,拜托了:

There is little water and air.

There are little water and air.

There is water and some animals.

There are water and some animals.

There is a little water or some animals.

There are a little water or some animals.