1. 评估者：教师的课堂角色发生了变化,变为组织者 (organizer)、控制者(controller),提示者(prompter),参与者(participant),资源(resource)和 评估者(assessor). 教师的课堂角色由教学机构管理运作、社会文化背景、教师自身特征与教学观以及教师所采用的教学法等多种环境因素影响.

2. 评估人：主宰着课堂的各个环节.教师作为课堂教学的controller,知识源或语言教学的语源(resource),启动或启发者(prompter),参与者(participant),评估人(assessor)辅导者(tutor)等的作用常常是通过课堂教师用语体现出来的.教师课堂用语是指在课堂教学过程中,

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3. 评估员：房地产税的多少取决於评估,评估员(assessor)的检查内容有建筑类型、地点、建筑日期、原始价格等. 实际上,评估经常出现差错. 例如,地产评估员应该一家家详细查看,但他们没有时间和资源这样做. 在下列情况下,

1. 估价员;（资产）评估师;估税员
    An assessor is a person who is employed to calculate the value of something, or the amount of money that should be paid, for example in tax.

2. 专家;（尤指法庭的）陪审推事，顾问
    An assessor is a person who is an expert in a subject, especially someone asked to advise a court of law on that subject.

assessor的近义词

    e.g. Two judges and six lay assessors sentenced White to life in prison.
           两名法官和六名大众陪审推事判决怀特终身监禁。

3. （考试、面试、体育赛事等的）评分者，评委
    An assessor is a person who judges the performance of someone else, for example in an exam, at an interview or at a sporting event.

    e.g. ...external assessors of GCSE exam results.
           普通中等教育证书考试结果的外请评分者

1. an official who evaluates property for the purpose of taxing it

    Synonym: tax assessor