Lucy is no longer a lazy boy ( what ) he used to be .这是一个单选,WHAT怎么解释?从语法方面可否较清晰的解释?

no longer is a person he is no longer a maths teacher Lucy is no longer a lazy boy ( what ) he used to be .这是一个单选,WHAT怎么解释?从语法方面可否较清晰的解释? No longer is there this is no longer He is no more a student.You are no longer a childHe is no longer a student为什么不行? A fact is no longer a bare fact! My life is no longer a woman's life!RT. She Is no longer a child.（同义句）是什么? My father is over 60 years old,he is ----------a teacher.A.no longer B.not longer C.no more this is no longer true but it is no longer She is 20 years old now,sho is no longer a little girl,为什么是 no longer 这里 no longer Once in a lifetime you'll reach a pointWhere being a slave is no longer enough 个性与色彩相关不再是秘密 ____is no longer a secret.(it is no longer a secret) No longer a good mood. no more,no longer的问题He no longer lives here 可以改作 he lives here no longer吗?但 He is no longer a child 不可以改作He is a child no longer的吧?no more也同理吗?如果是请举个例子吧!By the way,我有责任把教室打扫 not any longer 和no longer这两个有什么区别啊It is said that she ___lives in hospital.A no more B not any more C no longer D not any longer这个题选什么,需要理由