Question

21312—now the only exercise a child gets during an eight hou

Answer 1

额.

1.表示一个名词,前面的"an eight hour "是修饰"school day"的,正如"an eighty-year-old man"一样的道理.

2.恩,是的.

3.是“从.走入走出”的意思.

理解句子的时候 注意先把句子简化,看到主体才更便于理解.对于本句,主体为：

"exercise is walking"

a child gets during a eight hour school day 是exercise的后置定语

walking to and from his or her locker是个整体,走向和走出储物柜的意思.

希望能帮助到你.