问题 怎么判断一个单词的词根和词缀

...不同呢？答案说因为“becloud中的前缀be-表示‘decoration or to cover’，而在其他三个单词中‘be-’表示make or cause to be。”becloud中的“be-”不也是表示“使...成为”的意思吗？

问题 who从句能否表示the person that从句的意思

what从句有时候不表示疑问，表示the thing that从句的意思，比如，what he said is right.who从句可以这样吗？能否表示the person that从句的意思？

问题 of the British Toilet Association句子成分

Raymond Martin, of the British Toilet Association, said providing toilets was about health, well-being, equality and social inclusion.句中介词短语 of the British Toilet Association 作什么成分？

问题 an average of和the average of的用法与区别

An average of just 15 cm of rainfall last year has made it the driest year since 1850.各位老师好，请问：1.这个句子中为什么用an average of，而不用the average of呢？2.请问an average of和the average of用法有什么区别呢？ 3.我查找的时候发现有人说an av...

问题 show up among the patients中up是什么词性

The link between dreams and emotions shows up among the patients.句中 up 是什么词性？

问题 up的词性(be high up on the cliffs)

The light was high up on the cliffs.请问这里的 up 是介词还是副词？为什么？

问题 right up until the last minute的修饰关系

We needed strong momentum right up until the last minute.这里的right up是副词修饰until the last minute吗？

问题 状语从句的省略

The bus was held up by the snowstorm,thus causing the delay.后面一个句子的主语和前一个句子的主语bus并不相同，可以转换为 The bus was held up by the snowstorm,so it caused the delay    为什么还可以省略

话题 on the other

话题 on the menu

话题 the palce where

话题 take the bus

话题 by the time

话题 the same…who…

话题 the first time