2 关于从句引导词的省略
① that 引导的宾语从句如果紧跟上主句的谓语动词之后，通常可以直接省略，因为不构成歧义
② that 引导的定语从句，如果that在从句中充当宾语，通常that 被省略，所以省略that的定语从句对于初学者不是很好判断
特别 表述： 有wh 引导的主从不可以使用形式主语IT
根据that 引导的主从才可以使用IT做形主，然后主从后置
如何区分， 准确的句子成分解析
what - Why how 练习三部曲
第一步： 划分只有一个从句的复合句
I know (that)you are right
主谓 宾从
第二步 ：划分含有两个从句的复合句 并列级别的从句或从句嵌套从句
同级从句： When I was a student,I knew that you were right
时间状语从 主谓 宾语从句
主 系 表 主 系 表
嵌套 从句 They wonder whether we can finish this job which they gave to us
① We have realized the importance
② We have realized the importance of protecting our environment
③ We have realized the importance of protecting our environment which will be given our next
generation
We have realized the importance of protecting our environment which will be given our next
generation so that our children may have a new life that is as healthy and wealth as it has been in our dreams
连接代词，who ，whom ，whoever what which whichever
Whoever breaks the law deserves a fine 无论是谁 违反纪律都应该受到惩罚
表语从句
核心策略： 潘丹的绝对标准------系动词后的从句必须定位表语从句
常用的行动处 be
