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.
She wants to know whether the measures have been agreed ( ).A. toB. withC. aboutD. uponE. over答案是D.upon (=on). 但是我很奇怪和不解：A. to, B. with, C. about - 这3个选择不也可以吗？
...ll the fresh sweet milk in the pail that she had learned to carry balanced on her head.As she went along, she began thinking about what she would do with the money she would get by selling the milk.这段话里的 learned to carry balanced on her head. 是什么意思?
A：Mike, what do you know about writing a business plan?B：Plenty. What type of plan are you writing?A：Well, I have this great new idea that I think it will make a motza. B：Want to let me in on the secret?如何理解在一个句中出现的两个介词（in on）的用法？
The resistance experienced when one body moves over another, with which it is in contact, is called frictional force. 1)句中experienced是非谓语，相当于done, 和the resistence有被动完成关系，我无法理解这里的experienced词汇被动含义？2)moves over another: over如...
Q: Is there changing room?A: Yes, just down here on the left.主要是对答句不解，词都很简单，但感觉不知道怎么翻译，平时看到的here前面的down都是跟一个动词构成短语（比如sit down here），在这句里如果表现向下的意思，就是“下到这里”...
...一家人被迫开始迁徙。迁徙途中出现这样一句话：And no sooner than she did, their cave was destroyed and everyone had to go on this long, sucky walk with some weirdo they met...and die!（其中she did指女主半夜偷跑出去。）请问这里的go on是整体理解为“继续...
...顺便问一下，你知道玛丽住在哪里吗？The boy is not foolish. On the contrary, I think he is very clever. 这孩子不愚蠢，相反我认为他很聪明。A lot of us want to leave now—Bill, for example [=for example, Bill]. 我们很多人现在都想走——比如，比尔就是...
...hey were the last people you’d expect to be involved in anything strange or mysterious, because they just didn’t hold with such nonsense.老师、to be involved in anything strange or mysterious不定式作宾语吗？是不定一般式的被动形式吗？不定式的动词，没有先于谓语...