过去将来完成时

表示从过去某点看将来某时前会已发生的事。
* I thought you'd have left by this time. 我想这会儿你已经走了。
* I guessed that Helen would have told her something. 我猜海伦会告诉她一些情况的。
* I thought he would have finished his homework before Friday. 我认为他会在星期五之前完成他的功课。
* She said she'd have finished her exams by then. 她说那时她会已经考完试了。
* If she hadn't married, she would probably have achieved more. 如果她没结婚，成就或许会更大。