双宾语从句是一种复杂的语法结构,用来表达一个动作或状态的直接对象和间接对象之间的关系。它通常包括一个及物动词、一个直接宾语和一个间接宾语。直接宾语紧随及物动词之后,而间接宾语则位于直接宾语之后。例如:
1. She gave me a book that she had just finished reading.
2. They showed us the pictures they had taken on their trip.
3. She gave me the news that she had won the competition.
4. Your parents always give you what you like.
在这些例子中,"me"和"us"是间接宾语,"a book"和"the pictures"是直接宾语,而"that she had just finished reading"和"they had taken on their trip"(以及"that she had won the competition")则是分别修饰直接宾语的宾语从句。
双宾语从句的语序一律用陈述句语序,即使从句是一个疑问句或条件句。此外,当从句是客观真理时,从句通常用一般现在时,无论主句是什么时态。如果主句是一般过去时,从句则要用适当的过去时态。
需要注意的是,有些形容词(如afraid, sure, glad等)之后也可以带宾语从句,这种结构中,宾语从句可以视作拥有两个宾语的句子,即形容词后的宾语和从句中的动作接受者。
在使用双宾语从句时,确保从句的语法和逻辑正确是非常重要的,以使句子流畅自然。