i spent a large amount of time preparing for the exam.请问prepare为什么要用ing形式

分类: 作业答案 • 2022-07-06 14:29:24

问题描述：

答

a raised setting b risen to set c raised to set d risen setting 为什么选A b 感觉选项是 raised to set 好点啊。是c

答

因为spend time in doing sth ，，，in 可以省略

答

spend time +doing
花费时间做某事,是固定结构
所以用preparing
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