And while much of the focus has been on whether people are getting enough, a new survey suggests the timing of our sleep, and whether it aligns with our individual body clocks, is equally important. 请问老师们，此处为何用is？是因为and的部分理解为插入语吗？
...les are as much a part of childhood as Halloween and jump rope. 句中的much为什么可以用在a part of childhood前面？去掉much不是也可以吗？不懂的是，这种比较句中的much从语法上来说，究竟是什么词性？又起什么作用，是什么意思？可否用many...
...rospects for energy ，是因为than是连词吗？代表的是比较状语从句同理：句子2：The prospects for energy from tidal currents are good because（the prospects for energy ）from tidal currents are predictable and constant.句子2这样写符合语法规则吗？
短语 in detail 的意思是“详细地”，如： He did not describe it in detail. 他没有详细描绘它。 We haven’t discussed the matter in detail yet. 我们还没有详尽讨论此事。 请问句中的 in detail 可以改成 in details ...
...erica and France, for
example. But young women in America are almost three
times as likely to die in a fatal car accident
than are women in Britain，France,
Germany and Sweden (which still leaves then less than one
third as likely to die in a crash than
American men of the same age).有老师指出...
...Ⅱ-语法填空 Henry
Tyler made the catch of the year on the weekend. When he saw a young child
hanging from a sixth-floor apartment balcony (阳台),
Henry ran one hundred metres, jumped over a 1.2-metre fence, and held out his
arms to catch the falling child. 翻译：亨利·泰勒成了这个...
He wrote her a letter introducing himself and inviting her to copprespond.请问老师，introducing 和inviting 作 a letter 的后置定语还是作wrote的伴随状语?实物Letter可以作动词introduce 和invite的主语吗？ 谢谢老师。