作者：沪江英语 来源：沪江英语 2016-10-14 18:20
As a band instructor at an elementary school, I require my students to turn in practice sheets signed by their parents so I can be sure they are putting in enough time.
I had to laugh, however, when one parent wrote on her child's sheet, "Practiced 17 minutes, but it seemed like hours.
(1) band n.乐队
(2) instructor n.指挥
(3) turn in上交；归还
(4) signed by their parents:由他们的父母签名的。这是一个分词短语作定语修饰sheets.
(5) so I can be sure they are putting in enough time:这样我才能确定他们投入了足够的时间。这是so that 引导的目的状语从句，其中that省略。