The time Johnny spends on video games is more than three times as much as that he does on studying.
句中as much as that如何理解?
three times as much as 意为是三倍,that为名词替代词,替代the time. he does= he spends.
... is more than three times as much as the time he spends on studying. ( on应该删去,或者用on study)
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