since ; as 表示原因时,可以接名词短语吗?

They had their best suits on because of the celebration.

They had their best suits on for the celebration.

They had their best suits on (since / as) the celebration.

如果用since 和 as 后面可以直接跟 the celebration吗? 还是需要加什么介词吗?

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曹荣禄 1秒前

擅长：动词用法,句法问题

They had their best suits on because of the celebration. 原因状语

They had their best suits on for the celebration. 目的状语

They had their best suits on (since / as) the celebration. 错误

造句时要用你学过的、见过的结构，不要自己创造。这就是为什么我们要多阅读，熟悉常用的表达。

since作为介词，不能表示原因。

as当“作为”解时，有时可以翻译为原因，但并非真正的原因状语，而是表示身份等。