【新课教学过程(一)】选修8 Module5 The Conquest of the Universe Period 2(外研版)
Period 2 Grammar and Usage—Review of Noun Clauses
▇ Goals
● To review the use of the noun clauses
● To practise using noun clauses and master them
▇ Procedures
Step 1: Introduction to noun clauses
在句子中起名词作用的句子叫名词从句 (Noun Clauses)。名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等,因此根据它在句中不同的语法功能,名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
1.主语从句
主语从句在从句中作主语。
一、由what(whatever,whoever)等代词引导的主语从句。
What they are after is money. 他们追求的是金钱。
Whatever was said here must be kept secret. 这里说的话都应当保密。
二、由连词that引导的主语从句。其中that一般不可省略,但若用it作形式主语, that从句后置时,则可省略。为避免头重脚轻,我们倾向用it开头,后接be,seem等。如果句子是疑问形式,就只能用带it的结构。
That money doesn't grow on trees should be obvious.
金钱不能从树上长出来是显而易见的。
It is obvious(that)money doesn't grow on trees .显而易见,金钱是不能从树上长出来的。
Has it been announced when the planes are to take off?飞机什么时候起飞宣布了没有?
注意:
1)选用what还是用that引导主语从句要根据关联词在从句中是否担任成分而定。且what(以及whatever,whoever等)引导的主语从句一般不用it作形式主语。
What he said is true.他说的是真的。(what在其引导的主语从句中作宾语。)
That China is a great socialist country is well known.(=It’s well known that…)众所周知,中国是一个伟大的社会主义国家。(that在其引导的主语从句中不作任何成分,也无词义,只起连接作用。)