Studentsinclassroomswithunblockedviewsofatleast50feetoutsidethewindowhadhigherscoresontestsofovcabulary,languageartsandmathsthandidstudentswhoseclassroomsprimarilyoverlookedroadsandparkinglots.我知道个大致意

Question

Students in classrooms with unblocked views of at least 50 feet outside the window had higher scores on tests of ovcabulary,language arts and maths than did students whose classrooms primarily overlooked roads and parking lots.
我知道个大致意思.
但我不太明白的就是“than did students”,中的“did”是什么作用?

Answer 1

在至少50英尺窗外的畅通意见教室的学生有更高的分数测试的词汇,语言艺术和数学比学生的教室主要是忽略了道路和停车场.--谷歌翻译学生在课堂上的观点与畅通至少50英尺窗外在测试中的得分高于词汇、语言艺术和数学的学...