要说某件事停止了或变了，日常说法就是普通的否定句，在句尾加 anymore：don't / doesn't ... anymore。（你也可能看到写成两个词 any more，两种写法都对。）
not ... anymore，日常说法
She doesn't work here anymore.
I don't live in Senfarren anymore.
He doesn't smoke anymore.
试一试: Amina moved away last year. She ___ live here ___. (doesn't … anymore / doesn't … no longer / isn't … anymore) 答案: doesn't … anymore — 日常说法是 doesn't + 动词 + 句尾的 anymore：doesn't live here anymore.（不住这儿了。）“No longer” 是另一种句型（不能跟 doesn't 一起用），“isn't live” 又把动词形式搞混了。
no longer，稍微正式一点
no longer 意思一样，但更正式一点。它放在主要动词前面，动词保持肯定形式（不用 don't / doesn't）。
She no longer works here.
I no longer live in Senfarren.
We no longer need help.
试一试: In a formal letter: "We ___ require this service." (no longer / don't no longer / anymore) 答案: no longer — no longer 放在动词前面，动词保持肯定：We no longer require it.（我们不再需要这个了。）“Don't no longer” 用了两个否定，“anymore” 该放句尾，不是这里。
Not "She doesn't no longer work here." — say "She no longer works here. / She doesn't work here anymore.". no longer 已经是否定了，所以不要再加 doesn't。
试一试: Which one is right? (He no longer plays football. / He doesn't no longer play football. / He doesn't play football no longer.) 答案: He no longer plays football. — no longer 本身已经是否定的，放在动词前面，动词保持肯定：He no longer plays.（他不再踢足球了。）“He doesn't no longer play” 用了两个否定；“He doesn't play football no longer” 也是两个否定，还把 no longer 放到了句尾，但 no longer 该放在动词前面。