Section Ⅳ　Grammar & Writing

　　同位语从句

　　阅读下列句子，体会黑体部分用法

　　1．Some people have the idea that you can cross Canada in less than five days，but they forget the fact that Canada is 5,500 kilometers from coast to coast.

　　2．The girls were surprised at the fact that ocean ships can sail up the Great Lakes.

　　3．The thought that they could cross the whole continent was exciting.

　　一、同位语从句的引导词

类别 例词 说明 从属连词 that，whether 二者均在从句中不作成分；that无实义，whether意为"是否"。 连接代词 who，what等 有实义，在从句中作主语、宾语、表语、定语等成分。 连接副词 when，where，how等 有实义，在从句中作时间、地点、方式状语等成分。 　　I'm not sure about the question whether he will come.

　　对于他来不来这个问题，我不太确定。

　　The fact that the transport of the goods cost too much was not discussed.

　　运费太高这一事实没有讨论。

　　二、同位语从句应注意的几个问题

1．分隔式同位语从句：有时同位语从句与其所说明的名词会被其他成分隔开，从而形成分隔式同位语从句，这样做主要是为了保持句子结构平衡，避免