专四考试词汇与语法串讲
—名词性that-从句
1)由从属连词that引导的从句叫做名词性that认句。that只起连接主句和从句的作用.在从句中不担任任何成分，本身也没有词义。名词性that从句在句中能充当
主语、宾语、表语、同位语和形容词宾语，例如:
主语:That he is still alive is sheer luck.他还活着全靠运气。
宾语.John said that he was leaving for London on Wednesday.约翰说他星期三要到伦敦去。
表语；The fact that he has not been seen recently.事实是近来谁也没有见过他。
同位语;The fact that he has not been seen recently disturbs everyone in his office.近来谁也没有见过他，这一事实令办会室所有的人不安。
形容词宾语:1.I am glad that you are
satisfied with your job.你对工作满意我感到狠高兴。
2) That 从句作主语通常用it作先行词:而将that从句置于句末，例如:
It is quite clear that the whole project is doomed to failure.很清楚，整个计划注定要失败。
It's pity that you should have to leave.你非走不可真是件憾事。
用it作形式主语的that.从句有以下四种不同的搭配关系:
a. It+be+形容词+that一从句
It is necessary that-有必要……
It is important that重要的是……
It is obvious that…很明显……
b. It十be十ed分词+that从句
It is believed that.人们相信……
It is known to all that…从所周知……
It has been decided that. 已决定·
c. It+be+名词+that 从句
It is common knowledge that·…是常识
It is a surprise that…令人惊奇的是……
It is a fact that…事实是……
d- It+不及物动词+that分句
It appeaza that 似乎……
It happens that---碰巧……
It occurred to me that我突然想起……
