lest的词典解释

1. 唯恐，担心，因恐
2. 以免，免得
3. 用在表示"担心"，"恐惧"等词之后

1.唯恐；免得
If you do somethinglest something unpleasant should happen, you do it to try to prevent the unpleasant thing from happening.

e.g. I was afraid to open the doorlest he should follow me...
我不敢开门，唯恐他还跟着我。
e.g. The president has gone along with the hardlinerslest they be tempted to oust him...
总统同意了强硬派的意见，以免他们产生赶他下台的念头。

1. 惟恐,免得：less 更少的,更小的,其次的 |lest 惟恐,免得 | load 装(载),装货

1. I feared lest I should be late again.
   我唯恐自己再迟到。
2. I ran as fast as possible lest I should be too late.
   我尽量快跑,免得迟到。
3. Be careful lest you (should) fall from the tree.
   小心,不要从树上掉下来。

• Lord God of Hosts, be with us yet, Lest we forget, lest we forget.

  出自：R. Kipling

• She drew in her breath lest he should hear it now.

  出自：M. Sinclair

1. lest是从属连词,意为“以免,唯恐”。常用于引导目的状语从句表示否定,只用于书面语。lest在表示“惊恐”“忧虑”的动词后引导宾语从句,相当于that。
2. lest所引导的从句中谓语动词要用虚拟式,即“(should+)动词原形”。