Liu Yu,a good runner is serious about running.为什么用about,而不是in1楼哒偶觉得还系不够说服力饿.

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LiuYu,agoodrunnerisseriousaboutrunning.为什么用about,而不是in1楼哒偶觉得还系不够说服力饿.LiuYu,agoodrunnerisseriousabout

Liu Yu,a good runner is serious about running.为什么用about,而不是in1楼哒偶觉得还系不够说服力饿.
Liu Yu,a good runner is serious about running.为什么用about,而不是in
1楼哒偶觉得还系不够说服力饿.

Liu Yu,a good runner is serious about running.为什么用about,而不是in1楼哒偶觉得还系不够说服力饿.
初三上的Reading 吧 我们刚学过不久````be serious about 是固定搭配````没什么异议` 而且`没有 be serious in

running是动名词结构,做介词about的宾语,况且be serious about是个固定英语搭配:意为认真对待...,对某人某事是严肃的,认真的。所以不能用in。
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