the boy spent as much time watching TV as he did studying

问题描述:

the boy spent as much time watching TV as he did studying
这边studying前为什么要用did,

did 是指代 spent 这个单词的哦.
因为这里比较的是不是两个东西:watching tv 和study 而是 这个男孩spend 多少时间在这两个里面,对比的是spend的时间哦,所以要用did 来指代spend
祝好.