Though typically about two inches taller now than 140 years ago, today's people - especially those born to families who have lived in the U.S. for many generations - apparently reached their limit in the early 1960s. 这里的typically该如何理解？
Sea level of the magnitude now anticipated will be destructive to natural systems and living things and ______ to human as well. 这句话填hence,为什么so是连词就不能填只能填副词？连词可以省略成分啊？
原句：when I had seen them before online, I had no concept of these details.（当我以前在网上看到他们，我不知道这些细节。）该句是否可改成：when I had seen them online before, I had no concept of these details.将before 放到online后面？
请问老师，在He will put off the picnic until May 1st, when he
will be free.这个句子中when可以替换为介词加which的形式吗？如果能，是用什么介词？如果不能，是为什么？又比如He put off the picnic until the day on which he was
free.这个句子是对的吗？...
He would tell me if he knew, but he does not know anything.老师，您好！上面句子中后半句 but he does not know anything 为何不用 but he would not know anything 呢？这后半句话是属于条件从句吗？谢谢。
...blished in Cell, a team of researchers reported a new kind of adaptation - not to air or to food, but to the ocean.此句中not to air or to food, but to the ocean是两个定语从句吗？如果是定语从句，那这两个定语从句的内部成分应该如何划分呢？否定词not+主语adap...
The writing of a dictionary,
therefore, is not a task of setting up ruling statements about the “true
meanings” of words, but a task of recording, to the best of one's ability, what
various words have meant to authors in the distant or immediate past. The writer
of a dictionary is a historian, n...
I thought the machine would spit out the coins just when you won the game.
实际上是 when the game over, the machine will spit out the coins, 与事实相反，那么这个would句子可以看作虚拟语气吗？还是仅仅是过去将来？
What if we told you that when it comes to online dating, good looks could actually hurt you?what if we told you, when it comes to, that 的成分以及意思。先谢谢各位老师!
...和第一句相同？I told Bob that I met Susan, who was my best friend, when I was in London. I told Bob that I met Susan who was my best friend when I was in London.
...nsated for any dividends that the lender would have received had the stock not been loaned. 句中从句“the lender would have received had the stock not been loaned. 是虚拟语气。后面的had the stock not been loaned感觉有点突兀。请问是什么语法结构？