英语语法疑惑
问题描述：
英语语法疑惑
She reached the top of the hill and stopped______ on a big rock by the side of the path.
A.to have rested B.to rest
为什么不能选择A呢?
答
不定式的完成形式表明其所表示动作发生在谓语动词所表动作之前.
但是题中rest的动作不可能发生在谓语动词reach/stop之前,所以只用一般式.
如：I'm sorry to have given you so much trouble.
He seems to have caught a cold.