As (was) expected, he failed in the exam.

as从句的特点就是能省略的尽量省略。直到不能再省略为止。

He failed in the exam, and all of us had expected it.

(1)=As we had expected, he failed in the exam.

(2)=As had been expected by all of us, he failed in the exam.

(3)=As was expected , he failed in the exam.

(4)=As had been expected, he failed in the exam.

备注(1)：

(1)句，as代替后面整句话内容，在定语从句作宾语。

(2)句，as代替后面整句话内容，在定语从句作主语。

(3)句，as代替后面整句话内容，在定语从句作主语。

(4)句，as代替后面整句话内容，在定语从句作主语。

备注(2)：

(1)句过去完成时主动语态

(2)句带动作执行者的过去完成时被动语态

(3)句不带动作执行者一般过去式被动语态

(4)句不带动作执行者的过去完成被动语态

He failed in the exam,______________________________.（用定语从句改写）

解答如下：

He failed in the exam, as was expected.

=He failed in the exam, which was expected

参考译文：他考试不及物，这是预料之中的事情。