英语语法中,主句和从句都可能存在两个谓语,被称为双谓语从句。这种结构在从句中同时出现了两个谓语,一个是主谓宾结构,另一个则是带有从属连词的谓语结构。这种结构在条件状语从句、时间状语从句和原因状语从句中常见。掌握双谓语从句的用法和特点对于学习英语非常重要。
主句和从句都有两个谓语的结构通常被称为双谓语从句。这种结构的主要特点是,在从句中同时出现了两个谓语,一个是主谓宾结构,另一个则是带有从属连词的谓语结构。
下面是一个例子:
"Tom doesn't like the movie, but he will watch it again if his friends want to see it."
在这个句子中,主句是"Tom doesn't like the movie",从句是"he will watch it again if his friends want to see it"。而从句中有两个谓语,分别是"will watch"和"want to see"。这个例子中的从句采用了if引导的条件状语从句,这种从句结构中双谓语的情况比较常见。
除了条件状语从句外,时间状语从句和原因状语从句中也会出现双谓语的情况。比如:
"I woke up late this morning because my alarm clock didn't go off, but I still made it to work on time."
在这个例子中,主句是"I woke up late this morning",从句是"because my alarm clock didn't go off"。从句中的双谓语分别是"didn't go off"和"was able to make".