...ork said that humans now use 1.6 Earths worth of crops, forest, livestock, and other resources every year.By the 2030s, we will be using more than two Earths worth of resouces every year. 专家老师，句子里的红色字体Earth应该用所有格才是吧？也就是在Earths后加一’。请...
Once our friends stopped and stared into a shop window, upon which Holmes did the same. 这里的upon which Holmes did the same - 福尔摩斯也学着他们的样儿（=也那样做了）。请教老师，1）这里的介词 upon = on 是 “关于“ 的意思吗？2）可以转换成...
... a gas-fired home-heating furnace, a blower we had found at a flea market, and scrap aluminium siding, all joined by ordinary pop rivets.感觉此句话里没有谓语，应该把using 改为use 或used, 是吗？
...us rush to declare cell phones safe,using studies they feel are inadequate and too often weighted toward the wireless industry's intereststhey feel…到interests为止应该是studies的定语从句吧，那为按道理studies在定从中是做are 的主语啊，关系代词怎么省略呢
...ught in after a road traffic accident. She had suffered multiple injuries, and had been rushed up to theatre. I had spent some time in between assisting in theatre talking to the family as they waited for news. 怎么理解I had spent some time in between assisting in theatre talking to the family ...
Mr. McWhorter acknowledges something, and proposes no radical education
reforms. McWhorter先生认为一件事，也没有提出要进行彻底的教育改革。这个为什么要把否定含义放在动词前呢？我理解的是：提出没有彻底的改革，（提出了改革但是不彻底...
...puters as "bicycles for the
mind"—tools that let humans do things faster and more efficiently than
their bodies would allow.
史蒂芬·乔布斯常把计算机比喻成“大脑的自行车”，因为这一工具能提高人们做事的效率。（这一工具可以使人类以比身体能够...
Also remember that for a gem ring or pendant, roughly 70% of the value of the piece of jewelry is in the primary stone(s), with the rest in labor and metal.此处with是表“伴随”的用法吗，可译为“而”，“同时”？
...用法的小节中，不止一处却非也。如：情态动词must
：
It is six o’clock. She must have come home.
——have come，并非动词原形。He must have been ill.——have been，并非动词原形。情态动词had better
：You had better have done that.——have done，并...
...ames. 不管我怎样用心，还是记不住人们的名字。However far it is, I intend to drive there tonight 不管有多远，我今晚也要开车到那儿去。这样的however引导的是让步状语从句吧，因为这个however相当于no matter how，请问它是从属连词吗？好像...