The boy spends at least as much time reading as he __? A.writes B.见问题补充

The boy spends at least as much time reading as he __? A.writes B.见问题补充

解析
The boy spends as much time reading
那么这里实际上有一个结构sb. spend time (on) doing
其实as...as结构要求呼应，那么这个题目实际上就是The boy spends as much time (on) reading as he spends (on) writing
这样答案就出来了，英文中为了避免重复，往往用do来代替重复的动词，那么句子就是
The boy spends as much time reading as he does writing

选c,老师有点坏，去掉on，增加了迷惑性
rogerhow的说法部分对，部分不对，实际上前面spends time (on) reading后面也是spends time (on) writing，只不过这里用does借代spends,而不是“不能直接 He 后边接writing，这里是一般现在时，故加does。”

【试析】这里要填入的词是与前面的reading对比/呼应的，因此形式也需相同，故需用writing。但不能直接 He 后边接writing，这里是一般现在时，故加does。
希望以上的解释能帮到你。追问要加to 吗，为什么不能直接接writing追答不用加to！ to 你想加在哪里？
如果想直接接writing，那么把He 去掉。 as much time reading as writing.

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