be good at后面加动词ing形式。be good at，善于。

例如：You have to be good at spotting trouble on the way and heading it off.

你必须善于发现路上的麻烦并加以制止。

扩展资料

be good at加名词，介词宾格或名词性短语，很重要的就是如接动词要加动词的ing形式。

如：I am good at teaching English.I am good at football.

我擅长教英语。我擅长足球。

be good at后面要接名词，动名词或名词、动名词短语。

例句：John is good at swimming and basketball.

约翰擅长游泳和篮球。

It is important that we try to be good at everything we do.

重要的是我们要尽力做好我们所做的每一件事。

I have a shrill voice. I'll never be good at singing.

我声音尖利。我永远不会擅长唱歌。

I am good at chess, but not checkers.

我擅长象棋，但不擅长跳棋。