Please don't hesitate to let me know
Please don't hesitate to let me know _____ you need something.
[ ]
A. even though
B. as though
C. in case
D. so that
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答案
C
考点名称：从属连词从属连词的概念：
连词用于引导从句以形成句子的一部分或修饰句子的构成要素的叫作从属连词。
英语从属连词用法分类详解：
1、引导时间状语从句的从属连词：
（1）表示“当…时候”或“每当”的时间连词。主要的when, while, as, whenever：
如：He jumped up when the phone rang. 电话铃响时他吓了一跳。
We listened while the teacher read. 老师朗读时我们听着。
The phone rang just as I was leaving. 我正要离开，电话铃就响了起来。
（2）表示“在…之前(或之后)”的时间连词。主要的有before, after：
如：Turn the lights off before you leave. 离开前请关灯。
He started the job soon after he left the university. 他大学毕业后就开始做这份工作。
（3）表示“自从”或“直到”的时间连词。主要的有since, until, till：
如：He has lived here since he got married. 他结婚后就一直住在这儿。
Most men worked until[till] they're 65. 大多数男人工作到65岁。
（4）表示“一…就”的时间连词。主要的有as soon as, the moment, the minute, the second, the instant, immediately, directly, instantly, once, no sooner…than, hardly…when等：
如：Tell him the news as soon as you see him. 你一见到他就把这消息告诉他。
I recognized her the moment(that) I saw her. 我一看到她就认出她来了。
I want to see him the minute(that) he arrives. 他一到来我就要见他。
I went home directly I had finished work. 我一干完活就回家了。
Once he arrives, we can start. 他一来我们就可以开始。