It is possible that in years to come they may be regarded as normal.

在今后的几年里，他们有可能被看作为为正常人。

重点知识点解析如下

(1)It为形式主语：

(2)is为系动词：

(3)possible为表语：

(4)that in years to come they may be regarded as normal为句子真正主语（that为从属连词引导主语从句作句子真正主语）

(5)in years to come为主语从句时间状语

(6)they为主语从句的主语

(7)may be regarded为主语从句谓语

(8)as normal为主语从句主语补足语

备注(1)：

in years to come为介词短语作时间状语，years作介词in的宾语，动词不定式to come作名词“years”后置定语.

in years to come=in following years=in years which will follow

备注(2):

they may be regarded as normal为regard sb as的被动结构

把上面改为主动结构：people may regard them as normal

A:主动结构为regard sb as +adj.（形容词）

B:被动结构为sb be regarded as+adj.(形容词）