lest,for fear that 两个词用虚拟,但是后面难道不是用should吗？为什么看到有过去完成时的？

Question

RT
拜托你看清题目,用法我都知道.
Many applicants are hesitant to address an injury or illness for fear that the employer will see them as a potential insurance liability.
Regulators have ordered some banks to stop new loans until the end of the month for fear that frantic lending had been compromising monetary policy that most economists already considered too loose
如上两句,这个能算虚拟嘛??一个用will 一个用过去完成时。

Answer 1

Should用法：should用于“for fear that...（唯恐……）”、“（for fear）lest...（免得……）”和“for fear（lest）...（恐怕……）”引导的目的状语从句中。其中should常可省略

Answer 2

这跟虚拟无关。
首先，大家都知道for fear that后面要接句子，作为恐怕或以防的宾语。那么that后面句子的谓语动词到底该用什么时态就要看主句的谓语动词。
上面提到的句子1：主句为：Many applicants are hesitant to address an injury or illness
状语为：for fear that the employer will see them as a potential insurance liability.
主句的谓语动词用的是一般现在时，由句意可知道，该句for fear that后面引导的句子的谓语动词应该是发生在主句谓语动词之后的，所以用将来时。
句子2：主句：Regulators have ordered some banks to stop new loans until the end of the month
状语：for fear that frantic lending had been compromising monetary policy that most economists already considered too loose
主句谓语动词：have ordered用了现在完成时，表示动作已完成，动作发生在过去，后面对应的谓语动词只能为过去时，或跟过去有关的时态。所以for fear that后接句子谓语动词had been compromising用了过去完成进行时。