1.He said we had met 2 weeks before.2.We had met 2 weeks before.3.It had been fine the week before.请教老师2 weeks before 与 the week before 都是过去的一段时间，为什么第二句不对，第三句对呢？
...ese chapters, I examine issues such as the
importance of solitude (独处) and the necessity of cultivating high-quality
leisure to replace the time most now spend on mindless device use. Each chapter
concludes with a collection of practices, which are designed to help you act on
the big ideas of th...
尊敬的专家：您好！
有这么一道题：
—We'd better _____ faster, or we'll be late.
—Don't worry. The transportation has _____ a lot since the government finished building the subway.
A. drive; been improved
B. to drive; improved
C. drive; improved
...
Writing in the state-run Granma newspaper, the 89-year-old revolutionary leader rebuffed the American president’s suggestion that the 54-year-old trade embargo be lifted, putting the cold war in the Americas to rest.请问：如何理解句中 writing 和putting 这两个现在分词？
We chose Oliver to be ______ captain of our team because we knew he was ______ bravest leader in our team.A. the; the B. a; the C. the; x D. a; the答案为 A。表示头衔称呼的名词前面应该不...
...放到最后吗？即as the mountains above are)…再比如He wished to be such a man as Lei Feng was.(这里可以写成as was LeiFeng吗)He began his own business as did his friends.(这里可以写成as his friends did吗)
...ne by sitting for the majority of our waking
hours. 2)Exercising alone can be boring. 老师，为什么第一句用名词exercise，而第二句却使用了动名词Exercising呢？二句从形式和结构上看，几乎一样呀。是否意味着上面2句可以互换使用名词exercise和动名...
资料上有这样的正误句子：他有必要参加这次会议。误：He is necessary to attend the meeting.正：It is necessary for him to attend the meeting.原因是：necessary 这个形容词不能用“人”作主语。请问老师，这个解释有道理吗？