注意：即使主句动词用了过去时或其他时态，从句仍用should+v. eg 6: It has been suggested that the student take a make-up test. 特别的：当这类动词表示别的词义时，从句动词无需用虚拟语气 eg 7:His words suggested (暗示，表明） that he was unhappy. 类似结构：It is important/necessary that……，从句动词用虚拟语气 eg 8:It is important that he be at the meeting. eg 9:It is necessary that our schedulebe changed.