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？
It gives us patience for ourselves and toward others as well as patience while driving, catching a fish, working on our car, or raising a child.它让我们对自己和他人更有耐心，也会让我们在开车、钓鱼、养护车或育儿时更有耐心。这是从网上找到了一段英文长...
_____ has been stated in the annual white book,our national defense budget per year is well below the average of develpoed countries.选项是as ,如果我想用as it has been.......这个句型，不是as引导的非限制定语从句，原句子怎么改？
...ble not only to locate a shoal but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.麻烦老师讲解一下惯用短语"by the pattern of sth"的含义和用法，查阅各种词典，没有找到解释和说明。谢谢！
The XRD patterns of both the samples were well indexed to the standard cubic CsPbBr3 phase, with no observable secondary phases。个人理解：with no observable secondary phases 有种补充说明的意思，难道是啥补充状语？
These work by
decreasing how much the muscle is able to contract, and work very well in
reducing dynamic wrinkles," Vukmer said. 这句话的how much怎么理解？修饰miscle吗？多少肌肉吗？还是做程度讲？
...glish is difficult, and it gives them a
headache. So they can’t learn it well. But English is very easy for me. I’m
good at it. I’m very glad to tell you something about how I study English.First,
I think an interest in English is very important. When I was in Grade One, we
had a new subject ...
MALE PROFESSOR: Well, exclusive care by the male parent is much less common, but it does occur.MALE PROFESSOR: Now for animals other than birds, the care of young by both parents is pretty unusual in the animal kingdom.MALE PROFESSOR: Males contribute to parental care in fewer than 5 ...
... how to safely use the jointer, planer, table saw, drill press,
router; as well as how to use clamps, glue up, and finish their pieces.请问老师们，此句中加黑的部分是否为并列成分，为何不是写成use后并列三个名词的成分？2. It is one of the 17 biodiversity hot spots...
the book uses a large number of Chinese folk tales and myths to create
various vivid images of characters and animals, among which is the most famous Monkey King whose stories of
fighting genies are well known to almost every Chinese child .
They remarked about my patient and me being well qualified to keep each other company.有人认为这里的 my patient and me 不能用所有格（因为me没有所有格），但可以用 my patient's and my吗？比如：They remarked about my patient's and my being well qualified to keep ...
Although the process of professionalisation and specialization was already well under way in British geology during the nineteenth century, its full consequences were thus delayed until the twentieth century.虽然职业化和专业化的过程在19世纪的英国地质学界中已经形成，但是...
...irst approach to city planning. The cities of Australia and Canada also do well. However, the first American city is only in 34th place. The UK doesn’t fare too well either-its only city in the top 50 list is London, in 40th.Whether you’re planning a wholesome holiday, or simply wondering what y...