is good at后面加什么?

　　The little boy is good at performing calculations.

　　那个小男孩擅长计算。

　　He is good at writing poems.

　　他擅长写诗。

　　She is good at smoothing these little problems out.

　　她善于妥善解决这一类小问题。

　　He is good at music.

　　他以音乐见长。

　　The team put on a good show in the competition.

　　这支队伍在比赛中有上佳表现。

　　There have been some problems but basically it's a good system.

　　虽然出现过一些问题，但这基本上仍不失为一个好系统。