问题 how既可当引导词也可当限定词用吗

It’s not obvious how the capacity to visualize objects and to figure out numerical patterns suits one to answer questions that have eluded some of the best poets and philosophers.这里的how是既当引导词也当限定词对嘛？

问题 介词后的that从句

...a kid going to the fruiterer with my Dad, you could smell the fresh citrus and spring onions.原句网址：https://www.goodnet.org/articles/new-zealands-fruits-vegetables-are-going-packaging-free我觉得when I was a kid going to the fruiterer with my Dad, you could smell the fresh citrus and sprin...

问题 father and son作主语时谓语动词可以用单数吗

father and son 的意思是“父子”，用作主语时，后面接复数动词的例子见到过，但可以连用单数动词吗？即把 father and son 看作一个整体概念。

话题 and thus的用法

话题 Pride and Prejuduce

话题 animals and plants

话题 plants and animals

话题 lost and found

话题 more and more

话题 and who should

话题 yes and no

话题 brothers and sisters

话题 safe and sound

话题 husband and wife

话题 fruit and vegetables