It would certify that he had specialized in pharmacy, but it would further certify that he had been exposed to some of the ideas mankind has generated within its history.分别是had been exposed to和has generated.
Or so the thinking has gone since the early 1980s, when juries began holding more companies liable for their customers' misfortunes.自二十世纪八十年代初以来这种想法就已经出现了，那时陪审团开始让更多的公司对其顾客所遭受的不幸负责。请问句子中...
There have also been studies of pairings, both
voluntary (married couples) and forced (student roommates), to see which
remained together and which split up. Again, the evidence seems to favour
similarity rather than complementarity as an omen of a successful relationship,
though there is a complica...
...or explanations in the many post-mortems of the crisis has meant blame hasbeen spread far and wide. Governments, central banks and auditors have all been in the frame. The role of bank directors and management and their widely published failures have been extensively picked over and examined in rep...
在《新英语语法教程》（何桂金，高纪兰，第一版）中看到有下面的说法：助动词have和助动词be不能连用。但I have been doing it for a long time. She hasbeen a teacher for 30
years. It hasbeen stolen by a boy. 应该都是have和be连用吧？谢谢！
...city,
kindness, and hospitality; it seemed to me cruel that it should have been
broken to pieces by a ruthless chance; but the cruellest thing of all was that
in fact it made no great difference. The world went on, and no one was a penny
the worse for all that wretchedness. I had an idea that Dirk, ...
... business or for pleasure?3. Do you want to go out for a walk?4. Susan hasbeen on vacation in Thailand for a month.1 这一类介词短语中， for a walk，for pleasure 是状语表目的吗？ 而 on a journey， on business ， on vacation 是表语表状态，相当于一个形容词...
...something that
somebody else has said about what they think that they have been reading. 我若就此书向他们提一些问题的话，我发觉他们仅会重复一些他人阅读后的感受。（第二个定语从句that they have been reading 所修饰的是 something that somebody else has sa...
...wice since they got married. 他们结婚后已搬了两次家。They have been living in reduced circumstances since John lost his job. 约翰失业后，他们一直生活拮据。但是，下面这个句子，摘自《牛津高阶》第6版的 since 词条：She had been worrying ever since the l...
...esent at the meeting because he has gone to Shanghai on business.2. I have been told that Tom is a university student.以上两句中，一个在从句一个在主句，分别使用了现在完成时。▲句1，按说“他去上海出差”，纯属过去的一个动作，使用一般过...
...bsp;Where______john______?To the library. He ______there for an hour.A,has/been/has gone B,has/gone/hasbeen C,did/go/went D,did/be/went 为什么选B?3) Jimmy is leaving for a holiday.Really? Where______he______?A,has/gone B,will/go &...