文档介绍：名词性从句思维导图
表一：主语从句
表一：主语从句
（1）由连词that引导主语从句。
That you will win the medal seems unlikely. 你想取得奖牌看起来是不可能。
That she survived the accident is a miracle. 她在事故中幸免于难简直是奇迹
表一：主语从句
（2）用连接代词或连接副词或 whether 引导主语从句。
Which of them escaped from the prison is still a mystery. 她们哪一个是从监狱里逃跑，仍然是个谜。
When they will come hasn’t been made pubic. 她们什么时候来还不知道。
Whether she is coming or not doesn’t matter too much. 她来不来全部无关紧要。
（3）用关系代词引导主语从句。
What you need is more practice. 你所需要是更多训练。
Whoever is top from wins the game when two matched players meet. 两强相争勇者胜。
Whatever we do is to serve the people. 我们不管做什么全部是为人民服务。
固定使用方法和译法
（1） It is +名词+从句
It is a fact that… 事实是……
It is good news that … ……是好消息
It is a question that … ……是个问题
It is common knowledge that … ……是常识
类似名词还有：a pity；a wonder；a good thing； no wonder； surprise等。
It is a mystery to me how it all happened.
这一切是怎么发生是个谜。
It is common knowledge that the whale is not a fish.
鲸鱼不是鱼，这是常识。
It is no surprise that Bob should have won the game.
鲍勃会赢得这场比赛，这不足为奇。
固定使用方法和译法
（2） It is +形容词+从句
It is necessary that … 有必需……
It is clear that … 很清楚……
It is likely that … 很可能……
It is important that … 关键是……
类似形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.
It is obvious that conductors and insulators are both important in industry. 很显著导体和绝缘体在工业中全部很关键。
It is doubtful whether she will be able to come.
她是否能来令人怀疑。
It is essential that he should be here by the weekend .
周末之前，她应该到这里是必需。
It seems obvious that we can not go on like this.
很显著我们不能这么下去了。
（3） It is +过去分词+从句
It is said that … 听说……
It is reported that … 据报道……
It has been proved that … 已证实……
It must be proved that… 必需指出……
类似过去分词还有：known; estimated; expected; believed; thought;