知识细节的遗忘

例如：高三学习虚拟语气时，许多学生只记得 suggest 后面的从句应用should+原形动词的虚拟语气形式。而往往忘记了 suggest 作“联想”、“暗示”意义时，其从句谓语动词并不用虚拟语气。以至在许多学生中又出现Thesmile on his face suggested that he should be happy to have given his life forhis country.这样的错句。