试题题干
改错题
Take it easy. You know the effect of the drug will wear off four hours later.
参考答案
试题解析
wear off 逐渐消逝，后面要加时间范围。four hours later意为四小时后。而in four hours意为在接下来的四小时中。
改错题
Take it easy. You know the effect of the drug will wear off four hours later.
wear off 逐渐消逝，后面要加时间范围。four hours later意为四小时后。而in four hours意为在接下来的四小时中。