UC知道：想知道神马，提问回答学习问题百度都知道

一道选择题：I wont't be able to attend the meeting____I'll be on holiday with my family.

来源：百度知道编辑：UC知道时间：2024/07/05 06:55:42

A:if B:since C:though D:while

答案是B,我想知道为什么，为什么不能是if

因为这个句子后面的成分是表原因而不能表假设，而且if后面不能用will将来时态，since有时候可以用来表示“因为”

因为if连接的两个从句不能都是将来时的，应该有一个是一般现在时的才对哦！

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