约1270字。
　　高中英语必修3 Unit 5 Canada―“The True North语法教学案
　　Period four grammar：同位语从句
　　一、Preparation for the lesson before class
　　Stepone: make a thorough inquiry for grammar
　　learn by oneself（SB P37 Discovering useful structures）
　　Let’s students find out and understand concepts usesof by consuling materials.
　　同位语从句是名词性从句的一种，常用从属连词that引导，（when, where, who等也可引导），常常跟在fact, idea, opinion, news, hope, ability, patience, answer, order, report, wish, decision, suggestion, belief, doubt, fact, hope, message, promise, question, reply等名词后。同位语从句一般用来解释或说明这些名词的具体含义或内容。在逻辑上表现为同位关系。例如：
　　①Finally the workers got an answer that the government could do nothing to raise their wages.
　　工人们最终得知政府不会采取任何措施来增加他们的工资。
　　②They are familiar with the opinion that all matter consists of atoms.
　　他们很熟悉这一观点，所有的物质都是由原子构成的。
　　二、Discussing each other during class
　　Steptwo:同位语从句与that引导的定语从句的区别
　　：
　　1） 从先行词来看
　　同位语从句与名词在本质上是同一的，是形式与内容的关系，该名词是需要做特殊说明的抽象名词。例如：
　　They were delighted at the news that their team had won.
　　当听到他们的球队赢了的消息时，他们欣喜若狂。
　　逻辑关系：The news was that their team had won.