英语翻译是否都为:when will they arrive?Where will they arrive?可是arrive不是不及物动词吗?为啥arrive后面不加in或者at呢?

问题描述:

英语翻译
是否都为:when will they arrive?Where will they arrive?可是arrive不是不及物动词吗?为啥arrive后面不加in或者at呢?

When and where will they arrive?

他们何时到的?When did they arrive?在回答时才需要加in或at.
他们将到哪儿?Where will they go?

when和where都是副词啊,又不做宾语,要介词干啥?