By the middle of the 20th century scientists believed they were well on the way to treating, preventing, or eradicating many of the deadly infectious diseases that had plagued humankind for centuries.为什么句中用了 that 没有用 those 呢，指代的不是复数吗？
老师好，
For the first time in the modern era, non-Hispanic Whites are officially a minority in California, amounting to a little less than half the population of the state, down from nearly three-quarters a decade ago.
句子来源GMAT。请问这句话是little为代词，less than作定语...
Soundscapes may be made to create acoustical scenery, shaping the perception of space that is visually evident on the stage.请问老师这个非谓语动词的主语是acoustical scenery吗？我可以理解为：Soundscapes may be made to create acoustical scenery, （acoustical scenery shapes sha...
They decided to accept the award in the knowledge it would further spread their findings.句中in the knowledge怎么理解 在对...的了解中接受了奖项?What started as an exercise in curiosity of two academics from Melbourne’s Swinburne University has found vibrations cause earthworms to ...
Instead,the studies ended up giving their name to the"Hawthorn effect",the extremely influential idea that the very act of being experimented upon changed subjects' behavior. 请问这里面act的后置定语为什么使用了of加动名词being experimented而不直接把of省略使用现在分词b...
The app has logged 5 million downloads, much to the concern of many
parents who argue that the students spend less time thinking about challenging
problems. to the concern of是什么用法？在词典上查不到。这里much是作副词修饰吗？后面整个分句是不是介词短语作状...
While it could be argued with some conviction that the criminal in the first instance should be merely isolated from society，such should not be the fate of the latter type murderer.请问句中的such的语法功能？
...问题。After years of hard work, our country has used only 7 percent of the world ’s cultivated land to feed 22 percent of the world ’s population, which basically solved the problem of food and clothing for 1.2 billion people.老师我想问一下这里的which非限制性定...
...下总结，这样对国内学习英语应该也有好处。具体如下：The volume of fluid on the vaginal surface usually increases within 10—30 seconds of the
onset of stimulation.（该句子来自于美国大学生理学教科书）另外：学生在这里写出一个全世界生理学都...
The Shanghai Composite index fell by 8.5%.The Shanghai Composite index fell 8.5%.The share price has risen by 8.5%.The share price has risen 8.5%.请问哪个 fall 和 rise 哪个是正确的？怎么判断用不用介词 by？
1.Rescue workers continued to search for survivors, nearly 72 hours after the collapse of the World Trade Center. 请问老师，nearly 72 hours… … Center 这部分是什么短语作什么成分？ 2. The total energy given off by the devastating earthquake was many times more than any conc...
At dusk, a red sky indicates that dry weather is on the way. This is due to the sun shining through dust particles being pushed ahead of a high pressure system bringing in dry air. A red sky in the morning is due to the sun again shining through dust.这篇短文的背景知识是“朝霞不出门...