上面的句子来自2019版人教版高中英语新教材必修一的 Unit 5（p60）。How many billion people speak the UN’s official
languages as their native or second language?句中用 billion 是为了表示“多”吗？去掉也可以吧？
...ould
come tomorrow, l would tell him everything.③ I'm writing to
confirm the arrangements for my trip to China. l should be leaving New York
Airport at 8 p.m. on July 18.第①句解释为真实还是非真实条件句？希望提供一下可靠的类似例句。第②句可否解释为真实条...
Based on recent researches, distance learning slowly proves as valuable as the traditional campus-based form.该句中 based on 这里是独立成分吗？还是状语从句的省略？如果是状语从句的省略？如何还原？
...ents who have individual public accounts on WeChat, 5 percent claimed that they had built popular "self-media" brands using their accounts, while 12.2 percent said they had made money from the accounts through advertising.这个句子是用 among 还是 of ？还是两个都能用。
...，从句的时态要后退，下面的句子
我不能理解：I checked the orders instantly. That’s when
we realized we made a mistake.犯错误这个动作发生在 realized 之前，为什么不用过去完成时？我了解主句是said，told 那种，但是像 realized 这种，如何...
...numents, several different ancient urban plans and large water reservoirs, the site is a unique concentration of features testifying to an exceptional civilization. 这段话摘自2019上半年CATTI二级笔译真题英译汉（第二篇），请问该如何翻译？粗体字作什么成分？
During two years of the pandemic, Americans continued to be a generous lot.在疫情的两年里，美国人依然慷慨大方。这里的 be a generous lot怎么理解的？这里的lot是作后置定语修饰generous？那么 be a generous lot中的 "a" 可不可以去掉，变成be generous lot...
（专八04年改错）Congressional
committees also have the power to compel testimony from unwilling witnesses,
and to cite for contempt of Congress
witnesses who refuse to testify and for perjury those who give false testimony.cite sb. for sth. 似乎更为常见，因此我将 for
contempt of Co...