Not having obtained a ticket for the match, I can only watch it on TV.这个Not having obtained是什么用法？啥意思？是哪句话的简写吗？属于什么语法呢？not后面加名词词性的词语对吗？所以having obtained是名词词性吗
Researchers
thought they might be able to use those similarities to learn a dead language,
as long as they understood another language from the same "family".They
chose two dead languages that are over 3000 years old. One is Linear B, which they compared with
Greek. Linear B was first understood i...
They must be athletes who are masters in their sports and also set good
examples for others.句子来自2019版人教版高中英语新教材必修一的
Unit 3（p38）。请问句中的 for 可改为 to 吗？若可以，有区别吗？
...，此句是2002年英语专业四级考试阅读中的句子。Few of us are
content to accept ourselves as we are, and few are brave enough to ignore the
trends of fashion.1. 对于be content to do 和be brave to do 这种结构如何分析好？是be content算作系表结构，后面to do不定...
...enn wanted amphetamines to be used by infantrymen but by students.答案将not加在第一个by的前面，请问not可不可以加在to be used的前面呢？将句子理解成The physician-writer wanted amphetamines not to be used by infantrymen but( to be used) by students.可以吗？
1.如果是有Be动词情况下
Is he not a rich man?
Isn't he a rich man?
2.如果没有Be动词的情况下
Did he not come yesterday?
Didn't he not come yesterday?
两组句子在表达意思上有没有差别,Not应不应该提前？
From then on, he was recognized as an artist of preternatural abilities, not only as a composer but also as a pianist and conductor.请问这里的not only as a composer but also as a pianist and conductor.是作什么成分？状语还是同位语？
...ent and attention to the ethical values of the humanities. From the
outset they faced one question, seen indeed before the days of empire had
dawned, but not fully resolved over twenty centuries. Each dynastic house would
need to choose between two principles that lay behind its way of government.
E...
While the effect of cows milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who are struggling to fall asleep at night.请问这里的 time 为什么不用复数？