Fossil charcoals tell us that wildfires have been part of life on Earth for as long as there have been plants on land. That's m ore than 400 million years of fire.
求教老师一个句子，这个there be句型中的take action后面为什么加个on？At this time there is nothing to take actionon since the analysis has yet to be completed. ——来自2017年6月英语六级阅读理解。这个take action后面为什么加on？
CNN 10 《Uncertain Future of Popular Entertainment Venue》They were not happy. They quote, unquote, "boycott" the film but it didn't really matter because there wasn't a theatrical footprint really to speak up. And, you know, it came at a time that families really needed something to do to occupy...
...扰老师，实属无奈之举，还请刘老师见谅Underwear is based on my body shape to design.（误）to design 就多余了，因为 What body shape 是 be based on 的宾语，具体说是on 的宾语，to design 被架空，缺少宾语。请问刘老师，可否把 to desig...
不明白下面句子中的 For the Japanese festival Obon 为什么要用介词 for，而不是用其他介词（比如 At, On 等）：For the Japanese festival Obon, people should go to clean graves and light incense in memory of their ancestors. 在日本盂兰盆节，人们要扫墓、烧香...
...、 It is said that in Australia there is more land than the government knows __________. A. it what to do with B. what to do it withC. what to do with it D. to do what with it这道题为什么选C？ 选项在句中充当什么成分？二、汉字是...
The small village was perfectly quiet, except for a few occasional dog barking.
老师，这里的barking是什么语法成分呢，为什么不是a few dogs barking occasionally，a few修饰可数名词的复数，barking是现在分词作非谓语当后置定语，我这样理解对吗？Mr.Ma...
... would be making morning coffee at home instead of going to a café, for example.
不理解句中为什么用cut down on，这个on是否是多余的呢？如果用on也可以的话，那cut down sth与cut down on sth有什么区别吗？谢谢！
...tudies have found positive effects. A study conducted in Youngstown, Ohio,
for example, discovered that greener areas of the city experienced less crime.
In another, employees were shown to be 15% more productive when their
workplaces were decorated with houseplants. The engineers at
the Massachuset...
...：1. Debtor and creditor overdraw primarily , the banker-customer relationship is that of debtor and creditor—who is which depending on whether the customer's account is in credit or is overdrawn.Debtor and creditor overdraw primarily, the banker-customer relationship is that of debtor and credit...
A：Is this your first time to set up for a trade show, David?B：No. I attended the fair last year.A：Other than selling interesting books, we have to try and make our booth stand out. That means we have to do something with this boring wall.B：That’s what the posters are for. I see they focus ...