There can't have been so many people in the street so late at night.There can't be so many people in the street so late at night.请问此例句中，用 have been 和 be 句意上有什么不同？ 常态的事件不应该用一般时态吗？
...ctly the shape of the markings the cat had had around its eyes.问题：我的理解exactly是做强调用，但感觉加粗部分更像是定语修饰glasses，是exactly前省略了 that is （...glasses that is exactly the shape...）嘛？麻烦老师帮忙分析下这部分成分，以及类似...
下面的内容摘自2024新全国卷2的阅读D：In
the wrong hands, such a book could prove as complicated to process as the
computer code (代码) that powers AI but,
thankfully, Campbell has more than two decades’ professional experience
translating the heady into the understandable. She writ...
...资料上查到 not only…but also 可以连接句子（但not only后面的句子要用部分倒装）：Not only did he promise to do it, but he did it.他不但答应做，而且做了。Not only doe she speak English but also French. 他不仅说英语，而且还说法语。Not only did h...
...at will affect our discussion]为了便于讨论，我们假设这是错误的。后面这个：let's say for now
that it was a mistake so that we can see how that will affect our discussion，不太明白，能否从结构上分析一下这个句子，let's say含义是“假如”，for
now that...