高中生如何备考雅思中的名词性从句从同学们非常熟悉的陈述句、一般疑问句和特殊疑问句的角度给大家分别讲解了具体备考主语从句、表语从句、同位语从句和宾语从句的方法，希望对大家雅思备考有帮助。
一、主语从句：主语从句是指在复合句中承担主语成分的句子，常见的连接词有that、whether、who、when、how等。为了避免句子的头重脚轻，我们经常会将主语从句放在后面，用it做形式主语。
1. 陈述句作主语，用that 来引导 ，经常用It作形式主语。
例如：That he finished writing the composition in such a short time surprised us all.
改写: It surprised us all that he finished writing the composition in such a short time.
2. 一般疑问句作主语，用whether引导，从句用陈述语序。
例如：Whether we will go for an outing tomorrow remains unknown.
改写: It remains unknown whether we will go for an outing tomorrow.
3. 特殊疑问句作主语，还用原来的引导词，从句用陈述语序。
例如：Whom we must study for is a question of great importance.
改写: It is a question of great importance whom we must study for.
二、表语从句：表语从句是指在复合句中承担表语成分的句子，常见的连接词有that、what、who、when、where、which、why、whether、how等。陈述句、一般疑问句和特殊疑问句变表语从句的规则同主语从句。
例如：
1. 陈述句作表语：The surprise is that he finished writing the composition in such a short time.
2. 一般疑问句作表语：Our concern is whether we will go for an outing tomorrow.
3. 特殊疑问句作表语: It is an important question whom we must study for.
三、同位语从句：同位语从句用来对其前面的抽象名词进行解释说明，常用的连接词有that、whether、what、who、how、when、where等。陈述句、一般疑问句和特殊疑问句变同位语从句的规则同主语从句。
1. 陈述句作同位语：The news that he finished writing the composition in such a short time surprised us.
2. 一般疑问句作同位语：The question whether we will go for an outing tomorrow remains unknown.
3. 特殊疑问句作同位语: The question whom we must study for is very important.
四、宾语从句：宾语从句常位于及物动词、介词、复合谓语或者形容词后做宾语成分。常见的连接词有that、 if/whether、who、what、why、how、when、whichever等。它的变化规则和主语从句不太一样。
1、陈述句作宾语：用that引导，第一个that可省略。
Tidal sites have already been identified (that )will produce one sixth or more of the UK's power-and at prices competitive with modern gas turbines and undercutting those of the already ailing nuclear industry. (剑9 Test 3 Passage 2)
分析：这句话是现在完成时，that引导宾语从句，引导词that可以省略。and表示并列，those指代前面的价格。
2、一般疑问句作宾语：用 whether/if都可以。
Following Henri Becquerel's discovery in 1896 of a new phenomenon, which Marie later called 'radioactivity', Marie Curie decided to find out if the radioactivity discovered in uranium was to be found in other elements.(剑9 Test 4 Passage 1)
分析：这句话的主干是Marie Curie decided to find out if ……。If引导宾语从句。
3、特殊疑问句宾语: 一般宾语从句后置，it 作形式主语。
This development is a response to market forces and, although museums and heritage sites have a special, rather distinct, role to fulfil, they are also operating in a very competitive environment, where visitors make choices on how and where to spend their free time. (剑9 Test 4 Passage 3)
分析：Although引导让步状语从句，这句话的主干是they are also operating in a very competitive environment。第一个Where引导定语从句修饰competitive environment。how and where在介词on之后，引导宾语从句。
上面就是给大家分享的高中生如何从常用的句型——陈述句、一般疑问句和特殊疑问句的角度来学习名词性从句，希望对大家有参考价值。最后，祝大家考出满意的雅思成绩。
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