■ it is a pity that…类句型中的主语从句用虚拟语气

在It is a pity that...句式中，其中由that引导的主语从句可以陈述语气，也可以用虚拟语气，其区别是：用虚拟语气（should+动词原形）主要强调惊讶之意，其感情色彩比较浓；若不特别强调感情色彩，则用陈述语气。比较：

It is a pity that she failed the driving examination. 她没通过驾驶考试真是遗憾。

It is a pity (that) she should have failed the driving examination. 她竟然没有通过驾驶考试，真是可惜啊!

注：与本句型相似的还有 it is a shame that…句型：

It’s a shame that they are so wasteful. 这样浪费太遗憾了。

It’s a shame that they should be so wasteful. 竟然这样浪费真是太遗憾了。

■ it is suggested that…类句型中的主语从句用虚拟语气

在It is suggested that...句式中，其中that引导的主语从句通常用“should+动词原形”这样的虚拟语气，其中的should在美国英语中通常省略，句首的it为形式主语。如：

It is suggested that the question should be discussed at the next meeting. 有人建议在下次会上讨论这个问题。

注：与本句型相似的还有以下句型：

1. it is desired that…句型：

It is desired that we should get everything ready by tonight. 希望一切在今晚准备好。

It is desired that this rule should be brought to the attention of the staff. 希望这条规则引起全体职员的注意。

2. it is arranged that…句型：

It was arranged that they should leave the following spring. 已安排好他们第二年春天离开。

It was arranged that Mr Sam should go and help Bettie. 他们作了安排，由萨姆先生去帮助贝蒂。

2. it is decided that…句型：

It has been decided that he should be given the job. 已决定应当给他工作。

It has been decided that the sports meet should be postponed till next Friday. 已决定运动会延期到下星期五。

3. it is requested that…句型：

It was requested that a vote (should) be taken. 有人要求进行表决。

It is requested that Miss Zhang (should) give a performance at the party. 请求张小姐在晚会上表演一个节目。

4. it is proposed that…句型：

It was proposed that this matter be considered at the next meeting. 有人提议这事下次会议再讨论。

It was proposed that the president be elected for a period of two years. 有人提议选出的主席任期为两年。