to have+过去分词
The Romans seems to have built this castle.
The boy appeared to have been hurt in the accident.
It seems that the Romans built this castle.
It appeared that the boy had been hurt in the accident.
These tourists seem to have lost their way.
It seems that these tourists have lost their way.
听友412820639
讲滴太好了
军爱辉雅尧豪
求更！
溥博渊泉1
Romans seems to，这还教语法啊
听友237445948
我感觉你说的语法我都没听懂，什么是完成时的不定式你从头到尾都没说
1873868izqt
听到你的英语语法课，就决定认真学英语了，非常感谢你的无私奉献，让成千上万人受益，虽然你的课程学完了，但我还是会继续努力的！祝你生活愉快！