...so far, made handsome
profits. It signals a change in what
has, until now, beena key element of scientific endeavor.请问老师：1. in what has, until now, beena key element of scientific endeavor是作状语吗？2. until now是状语吗？我看到有的解释说，这里的until now是插入...
My friend, Herbert, hasalways been fat, but things got so bad recently that he decided to go on a diet.句中“hasalways been fat”用了现在完成时，究竟是什么含义？这里为什么要用现在完成时呢？可以改成“is always fat”吗？含义有何不同呢？麻烦老师...
... houseand made enquiries. He
was in hospital still, but his wife, who had beento see him, said he was
swearing hard to kill Strickland when they let him out.A
week passed."That's
what I always say," reflected Captain Nichols, "when you hurt a man,
hurt him bad. It gives you a bit of time to look a...
...en hours)Tom hasbeen out since yesterday. (for two days)Tom hasbeen busy recently. (for a week)由于2和3的规则一样，所以，可以合并为一项。在现实语言中，2和3的情况，有时候不带“一段时间的状语”。这下就带来了难题：产生了歧义。歧义有二...
...必答”（第1期）【问】The science of medicine, _____ progress
hasbeen very lately, is perhaps the most important ofall the sciences.a. to
which b. in
which c. which d. with
which【答】张老师点评：此题在以下四个可供的答案中只有B是正确的，但progress前通常...
It is utterly confusing to me that people do not recognize this, despite the fact pretty much anyonewhohasbeena student can tell the difference between their best and worst teachers.这句话怎么理解？为何who后面有两个谓语动词？
...of the past were exceptionally versatile men. Right up until comparatively recent times, it was possible for an intelligent person toacquaint himself with almost every branch of knowledge. Thus men of genius like Leonardo Da Vinci or Sir Philip Sidney engaged in many careers at on...
...as suffered or witnessed atrocities that occasion unbearable memories: for example, those with firsthand experience of the Holocaust. The life of that individual might well be served by dulling such bitter memories,xvii but such a humanitarian intervention, if widely practiced, would seem deeply tro...
The behavioral sciences hasbeen slow to change partly because the explanatory items often seem to be directly observed.既然名词修饰名词作定语，表示分类、类别、用途等，这里的 behavioral 可以改为 behavior 吗？即 behavior sciences 表示行为一类的科学。
... man was
faced with a real need to understand something about the seasons. Recent
scientific evidence seems to indicate that this assumption is incorrect. Historians have long been puzzled by dots,
lines and symbols which have been engraved on walls, bones, and the ivory tusks
of mammoths. The...
...a basic intellectual discipline in European universities. However, only in recent years has it become a feature of undergraduate programs in Canadian universities. Traditionally, legal learning hasbeen viewed in such institutions as the special preserve of lawyers, rather than a necessary part o...
...e houseand then on to the leaves of the tree. I
realized sadly that I had been completely defeated by their ingenuity. The ants
had been quick to find an answer to my thoroughly unscientific methods.1)
为什么使用了has not
stood 完成时，而不是will
not stand或does
not stand呢？为什...
...a may be the one who keeps the great ape on the right path. “The war hasbeen so brutal and has brought him to places where he has these feelings about humans that he’s never had,” Reeves says of Caesar. “And yet there’s this other part of us that knows that, for the lack ofa better word,...
...iety. Before a treatment can be administered, the causes of his antisocial behavior must be found. If the cause can be removed, provisions must be made to have this done.原文在 https://www.educity.cn/english/1898213.html题目：The Biblical expression “an eye for an eye, and atooth for a...