Miss Black writes something on the blackboard and then turns to the class and finds that.

布莱克小姐写了一些东西在黑板上然后转身面向同学...

Black小姐在黑板上写了些东西然后将脸转向同学并找那个东西.

Miss Black writes something on the blackboard and then turns to the class and finds that....后面应该还有才对
翻译：Black 小姐（老师）在黑板上写着些什么，然后转身面向学生们，她发现。。。。。。。