不擅长打篮球用英语怎么说

"不擅长打篮球"用英语可以说成 "not good at playing basketball"。

"Not good at" 是 "不擅长" 的意思，是由 "not" 和 "good at" 组合而成。"Not" 是否定词，"good at" 是 "擅长" 的意思。

例句：

I'm not good at playing basketball. (我不擅长打篮球。)
He is not good at playing basketball either. (他也不擅长打篮球。)
She is not good at playing basketball, but she is good at playing soccer. (她不擅长打篮球，但擅长踢足球。)