Question

It was at the very beginning ___ Mr Fox made the decision ___ we send more firefighters here.

A.when ,which B.when ,that C.then ,so D.that ,that
答案是D，我也明白。我想知道如果选B，语法是否有问题，我觉得可以翻译成“Mr Fox在做出这一决定时我们就派去了更多的消防队员“

Answer 1

你好。教你一个简单实用的办法。
把你的句子还原到非强调句------ At the very beginning, Mr Fox made the decision THAT we should send more firefighters here. 从非强调句，我们可以看出，at the very beginning是时间状语短语，不是句子,所以when就根本用不进去。
如果一定要选择B，句子必须是：
---------It was the begiining of this year WHEN Mr Fox made the decision THAT we should send more firefighters here.----------这是时间状语从句+同位语从句。 when引导的是时间状语从句。（句子里面没有介词AT！）
It was AT the very beginning THAT Mr Fox made the decision THAT we should send more firefighters here.------多了介词AT，句子就成了强调句。
祝你学业天天向上。

Answer 2

这是个强调句，第一个that表示强调，第二个that是先行词的标志

追问

我知道第二个同位语从句，

追答

对的