for fear that

题目

for fear that
这个词组怎么用?必须用虚拟语气吗?
能提供一个（或几个）例句及翻译吗

答案

以免,惟恐,后面用虚拟语气,
He worked hard for fear that he might be fired by the boss.
他拼命地干活惟恐被老板解雇.
He walked fast for fear that he should be late.
他快走,以免迟到.