As it happens , we had been having a great number of cases of
diphtheria in the school to which this child went during that month.
请问在这里使用完成体和完成进行体的区别是什么？
完成进行体更强调事件在那个月里不断发生吗？还是本质区别并不在此？
...
it’s可以由it is, it has, it was省略而来，至于 it is 与 it has 比较好区别。比如：It’s cold today. 今天很冷。(it’s = it is；因为这是系表结构，且有today)It’s arrived early today. 它今天到得很早。（it’s = it has；因为arrived是不及物动词）...
He phoned us to attend the meeting as scheduled.He phoned me to say the meeting would be postphoned.请问这两句用的都是 phone sb to do sth，但其中不定式的用法是不同的，对吗？我指的是它们的句子是不同的，对不对？请老师分析一下，谢谢！
前面有老师在牛津词典查到了下面的句子：It was getting dark and I couldn’t see to read. 天渐渐黑了，我看不见字，无法再阅读了。（http://ask.yygrammar.com/q-4014.html）请问一下老师，这个 see to read 中的不定式是什么成分？是宾语吗？谢谢...
The reason for its inquiry is that the BBC's royal charter runs out in 1996 and it must decide whether to keep the organization as it is, or to make changes. 问题：The BBC's "royal charter" stands for_______.B. the privileges granted by the Queen.C. a contract with the Quee...
Be they in the lab this morning? 他们今天早上在实验室吗？She can translate all these books into Chinese, be they in English, French or Latin. 她能够把所有这些书译成中文，不管它们是用英语写的，是用法语写的，还是拉丁语写的。貌似是一个倒装句...
这是外研版高一英语必修4课本中的一句话：Simply raise your hand, and a taxi appears in no time.= If you simply raise your hand, a taxi appears in no time.这个句子的后面主句为什么不用将来时呢？我记得主句是祈使句或者if引导的条件状语从句时，主...
Communism wasn’t not quite the best system as it eventually led the country to go nearly bankrupt.对于这里的wasn't not根本没有头绪。全文：Communism wasn’t not quite the best system as it eventually led the country to go nearly bankrupt. But if anything the transfer of skills u...