sat 语法题If we have knowledge of the future,our lives would be

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/20 01:39:24

sat 语法题
If we have knowledge of the future,our lives would be more predictable but less interesting.If we have 划线
a.If we have
b.If we have had
c.If we would have
d.Provided we have
e.Were we to have

这是虚拟语气的标准用法之一,选 e.Were we to have
是由 If we were to have 改写而来的；
和 If sb should ...= Should sb...一样的概念.
再问：那if引导的句子如果是if we have的话，后面的would be应该改成什么呀？
再答：除却虚拟语气的句子，以 If 起句的经常是 “条件句”，后面大多以将来时表达，但具体用词无法一概而论。试比较下面的句子，感受一下不同场景下使用的不同语气： If we have time to spare, we'll (we will) be happy to stop by. If we have your permission, we would love to skip tomorrow's class. If we have some extra time, we shall look at other options. 你提问中的这句，无法用 If we have 起句的原因就是 “纯属虚拟”，不可能实现的假设。

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