我读到 Using these instruments, with which magnification of
from 40 to 300 diameters were obtained, he observed minute bodies. 这样一句，感觉中间那个 with 去掉就是简单的结构，但是加上我就不理解了。
...样一个句子：He came across a person he used to know when he lived on the farm. 他偶然碰到了一个他过去住在农场时认识的人。我对句中的 used to know 有些不解。因为 used to 的用法特点是“强调今昔比对”，即“原来……但现在...
...look 后面要接 like，即说成 look like。如：He looks like my brother. 他看上去好像我的哥哥。The house looks like a bam. 这房子看起来像谷仓。It looks like a cross between a dog and a rat. 这看上去像狗和老鼠的杂交。Bates looks like a good-natu...
He will give his workers three days off, but only a decade earier, such an act would have required legislative approval in Virginia.请问这个是虚拟语气还是推测用法？would能不能换成情态动词的某种现在式？
If you describe someone as la-di-da, you mean that they have an upper-class way of behaving, which you think seems unnatural and is only done to impress people.请问：如何分析与理解粗体部分的从句呢？
...n NGO-produced 2018 statistical report highlighted a drastic increase of likely survivors and at risk women and girls for female genital mutilation over a five-year period. 此处的at risk是不是用错了？还有，后面的for是个什么搭配？ 摘自美国国务院澳大利亚人...