Question

高中英语语法

4. The committee members listened quietly as the union representative read the demands that his followers ____for.
A. be demonstrating B. demonstrate C. had been demonstrating D. have demonstrated

which is the answer and why.

Answer 1

B 这个是虚拟语气的题。
有些表示命令、请求和建议等的单词，动词后的宾语从句，形容词后的主语从句，和名词后的同位语从句中要使用虚拟语气，具体形式为“从句中谓语动词用should + do，美式英语中通常是要省略掉should，直接使用动词原型
常用的词汇有：
1. 动词：主语+suggest + that宾语从句。
suggest propose maintain require ask demand insist command prefer move request advise direct order recommend arrange desire urge
* insist坚持认为 suggest表明，显示 时不用虚拟。
2. 名词：It be + (my) suggestion + that同位语从句。
proposal suggestion advice agreement
command demand insistence motion
order requirement desire recommendation
3. 形容词：It be + necessary/suggested + that 主语从句。
advisable essential important vital proper
desirable imperative necessary preferable crucial
natural strange incredible desired suggested requested ordered proposed decided

Answer 2

这里不能理解为虚拟语气，因为 the demands 后面的 that 从句不是同位语从句，也不是别的名词性从句，而是定语从句。请对比：
He made a suggestion that we (should) take a taxi to catch the train.
（他建议我们打的去赶火车。）同位语从句，从句用虚拟语气。
He made a suggestion that I had made earlier.
（他提了一个我早就提过的建议。）that 引导定语从句，在从句中 that 作宾语。
再看原句，... the demands that his followers (had been demonstrating) for.
that 引导定语从句，在从句中作宾语。中文意思：“他的追随者一直在demonstrating 所主张的要求”。
既然不是虚拟语气，那么从时态呼应角度考虑，就只有 C 正确。
所以正确答案选 C.

Answer 3

B demands是要求的意思。后面的名词性从句应该用虚拟语气。这里省略了should
应该是 demands that his followers （should）demonstrate for.