问题 这里为什么不是on？

These hotspots are significant because they allow us to locate key areas for focusing efforts at conversation.雅思听力这句话，为什么是focusing efforts at conservation 而不是 on呢?

问题 the cost to your health还是the cost on your health

...考卷语篇型填空题里的一句话(There could be an even higher cost on your health.)使用的却是...cost on your health的介词搭配结构。请问老师：介词on和to在上述语境里可以互换吗？

问题 be good to 和be good for 的纠葛

...at is good to the mice,” replied the man. “I’ll take it,” said the first man.He paid for the cat and took it home. A week later, the cat didn’t catch any mice, but it played with them like old friends. So the man went back again with the cat under his arm. They had a quarrel because they b...

问题 副词的位置

Focus more on 与Focus on sth more. 老师这两个表达都是可以的吧？More focus on sth，这种一般情况下是错误的吧？除非用于倒装, 如：More focus on earnings, less focus on eureka

话题 insist on /upon 后接宾语从句

问题 介词用法

学生反复查看了柯林斯on的42条用法，朗文的49条用法，感觉没有一条释义可解释以下句子或结构中on的用法。   一，An honorary degree was conferred on him.   二 ，congratulate sb on sth       三，Troops advanced on the rebel stronghold.

话题 from now on时态的深入研究

话题 absorbing and reflecting on law

话题 the cost on your health

话题 on the way to do

话题 on the way to doing

话题 solution on/of/for/to

话题 analysis on/of/for/to

问题 look back on... as...的分析

...Sahlman of the Harvard Business School believes that people will look back on this period as“a golden age of business management in the United States”.刘老师，as“a golden age of business management in the United States”是否应该分析为宾语补足语呢？感觉look back on this per...

问题 表示“通过……”用through,by,on中的哪个介词

通过电话，除 on the phone 外，能否用 through the phone, by phone?通过信件，应该是 by letter 还是 by letters?辛苦专家解惑，谢谢。