be good at 怎样运用

be good at 擅长
比较级:be better at
用法:
1、be good at sth.
擅长某事.
如:She is good at English.
她擅长英语.
2、be good at doing sth.
擅长做某事.
如:Mary is good at swimming.玛丽擅长游泳.
3、萨丽比迈克更擅长数学.
Sally is better at math than Mike.

扩展阅读：be good at doing sth ... be good at后面跟什么 ... goodat后面加动词原形 ... be good at的三种用法 ... be good at后面要加吗 ... be good at后接什么 ... be good at的用法总结初中 ... be good at 是什么意思 ... be good at可以替换成什么 ...