provided that，providing that有区别吗？可以相互替代吗
有区别，不能互相替代，区别如下。
一、语义不同
1、provided that
翻译：假如，假设。
例句：Of course it is provided that you are doing it right.
当然，这是提供你是这样做的权利。
2、providing that
翻译：以某些为条件,假如
例句：I will agree to go provided that (providing that) my expenses are paid.
如果帮我支付费用，我就同意去。
二、文法不同
1、provided that 属于宾补，就是宾语补足语，是用来补充说明宾语。
例句：It is provided that the development time and cost of new products can be reduced greatly by using these methods.
结果证明采用这些方法和工艺路线大大缩短了新产品的开发周期，降低了开发成本。
2、providing that 属于主补，就是主语补足语，用来补充说明主语。
例句：Providing that you clear your desk by this evening, you can have tomorrow off.
如果你到今晚把手头上的工作做完，你明天就可以休息。
三、语境不同
1、provided that 适用很多情况，可以不具有先决条件。
例句：I shall go provided that it doesn't rain.
假如不下雨我就去。
2、providing that 具有先决条件。
例句：I will agree to go provided/providing (that) my expenses are paid.
假如为我负担费用,我就同意去。
可以代替，provided that和providing that的区别为：
一、指代不同
1、provided that：假如。
2、providing that：前提是。
二、侧重点不同
1、provided that：过去时，被动语态。
2、providing that：进行时，主动语态。
三、引证用法不同
1、provided that：用作及物动词时，可表示“提供，供给，供应，装备”，后可接名词或代词作简单宾语; 还可接双宾语，常用介词for引出间接宾语，也可用介词with引出直接宾语，有时with可省略。
2、providing that：provide作及物动词时，指“规定”，后可接that从句。值得注意的是从句中要用shall/should，不用will/would，偶尔可用虚拟现在式。
Any two persons may marry in Scotland provided that both persons are at least 16 years of age on the day of their marriage. 在苏格兰，如果双方均年满16岁就可以结婚。
（= if the two persons provided that they are …如果给这两个人被提供给他们双方均年满16岁）
This new film will attract the crowds, whatever its quality, provided that it gets played up in the right way. 如果广告做得好，那么，无论这部新片子的质量如何, 都会吸引许多观众的.
（= if the new film is provided that it gets played up in the right way 如果新电影得到广告做得好的条件）
相反，providing that 的逻辑主语是“支配该现在分词”的句子主语。如：
Providing that you exercise due care, there is no reason why you shouldn't live to a great age. 只要你适当地注意, 你就可享有很高的寿命.
（= if no reason provides that you exercise due care 如果没有理由规定了你适当地注意）
I will go providing that my expenses are paid. 要是我的费用有人代付我就去.
（if I provide that my expenses are paid 如果我有了我的费用有人代付的条件）
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