that主语从句讲解 教研课堂：英语语法之主语从句

教研课堂：英语语法之主语从句  

上一期教研课堂向大家介绍了英语语法从句体系，本期语法讲解将为大家重点介绍主语从句，先来回顾从句的体系吧。,上期文章中，我们已经知道，从句由名词性从句，形容词性从句和副词性从句三大句型构成。同时，我们还了解到名词从句的构成：,那么，名词从句中的四个分支句型，具体又是怎样应用的呢？在接下来的教研课堂中，我们将带领大家逐一揭开他们的神祕面纱。本期文章就让我们一起走进主语从句吧！,主语从句（Subject Clause）
,主语从句，顾名思义，就是从句做主语。主语从句主要分为三类：,1. that引导的主语从句
,“that”引导的主语从句可以放在句首，例如：,（1）That the seas are being overfished has been known for years.
海洋被过度捕捞，许多年来已经是人尽皆知的事情了。,但更为常见的是：用it作形式主语放在句首，that主语从句放在句末。,常见的主语从句的句型有：,a. It+be动词+过去分词+that从句,例如：,（2）As a child — and as an adult as well— Bill Gates was untidy. It has been said that in order to counteract this, Mary drew up weekly clothing plans for him.
童年时期，以及即使长大后，比尔·盖茨也不修边幅。据说为了改掉他的这个毛病，玛丽为他制定了一周着装计划。,（3）It is monly believed in United States that school is where people go to get an education.
在美国人们普遍认为，学校是人们接受教育的场所。,b．It+be动词+形容词+that从句,例如：,（4）Fortunately, the White House is starting to pay attention. But it’s obvious that a majority of the president’s advisers still don’t take global warming seriously.
幸好白宫已经注意到全球变暖的问题。但是很显然，总统周围大多数顾问仍然没有认真对待该问题。,（5）It is necessary that we should master a foreign language.
我们很有必要掌握一门外语。,c. It +be动词+名词短语+that从句,例如：,（6）It is an established fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or grey.
事实证明，如果把工厂的机器漆成橘黄色而不是黑色或灰色，工人就会干得更勤奋、更出色，事故也会更少。,（7）It is a truth universally acknowledged that a single man in possession of a good fortune must be in want of a wife.
一个众所周知的事实是，一个单身汉若是非常有钱，那么他一定想要找个妻子。,c. It+不及物动词+that从句,通篇浏览下来，你会发现“it作形式主语放在句首，that主语从句放在句末”这样的句式还是很丰富地，他们的用法你能区别开吗? 做个练习试试看吧！,1. _____ hard water does not mix well with soap.
A. That is a well-known fact B. That is a well-known fact in which
C. It is a well-known fact that D. It is a well-known that
答案：C
解析：本题考查主语从句“It is+名词+that”
译文：众所周知，硬水和肥皂不能较好地融合。,2. _____ I have made no arrangements to deal with such cases.
A． It appear that B. That appears C. They appear that D. It appears that
答案：D
解析：本题考查主语从句。
译文：似乎我并没有被安排处理这类案件。,点击进入教研日志查看更多英语学习指导信息>>