That,they calculate,would add 5.7 metres to the braking distance of a car travelling at 100kph.这里的 calculate是及物还是不及物?和前面的that

问题描述:

That,they calculate,would add 5.7 metres to the braking distance of a car travelling at 100kph.
这里的 calculate是及物还是不及物?和前面的that

不及物,与That无关.
That是主语,“they calculate.”是个完整的句子,用来修饰和解释说明主语“That”..calculate后无动词,故它在这个句子里是不及物动词.