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?
因为主语是timing(单数),逗号之间的那部分可以看作插入语补充说明主语。
如果觉得我的回答对您有用,请随意打赏。你的支持将鼓励我继续创作!