be good at后面跟的是ing形式还是过去分词?今天在教辅书上看到一题,Thinking back on the past years ,I worked so hard at English , so I am good at sopken English now .这是不是错的?be good at 后面不是要跟ing形式吗

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be good at后面跟的是ing形式还是过去分词?
今天在教辅书上看到一题,Thinking back on the past years ,I worked so hard at English , so I am good at sopken English now .这是不是错的?be good at 后面不是要跟ing形式吗

be good at doing sth ( 介词后的动词用ING)
注:SPOKEN English 是英语口语,不是说英语
Thinking back on the past years ,I worked so hard at English ,so I am good at sopken English now是对的.
区别:He is good at singing .