各位老师，下面这个句子without用法对不对？without...短语能不能放句末表结果？Studying hard allows high school students enter prestigious universities, without making them live with a lifelong regret.谢谢！
“It was he who spotted, in 2013, that within the two-decade cohort of susceptible individuals in 1918 there was a particular spike in mortality among those exactly 28 years old.”老师这句话里强调的是who 还是that，还有就是可以分析下剩余的语法结构么，谢谢老师！
两句话里为什么加that of，感觉去掉也没有关系。还有in microcosm的in怎么理解，对应不到词典的释义。
①In many aspects, Mahan's story is that of the Asian community in microcosm.
从许多方面来说，马汉的经历就是亚裔团体的经历的缩影。
②T...
It was not until the mid-1980s, when amplifying age and sex differences become a dominant children’s marketing strategy, that pink fully came into its own, part of what defined them as female, at least for the first few critical years.请教各位老师，红字部分作什么成分？该如何...
在美国媒体看到这样一句：Police are looking for the assailants who opened fire a Florida club, killing at least two people and wounding at least 20 more. 我觉得opened fire 后漏掉了一个介词on. 先将此句分享给大家，听听大家的意见。
下面这句摘自高中英语新教材人教版必修一 p2：Amy is talking to Ms Li, a
school adviser, about which courses to choose.请问这里的 about which 在此是此导定语从句吗？为什么用 which 呢？它的先行词 adviser 不是指人吗？
While we'll learn a lot with the great instruments we have aboard the rover, it may very well require the far more well-equipped laboratories and delicate instruments back here on Earth to tell us whether our samples carry evidence that Mars once harbored life.请问这句话中it作形式主语...