她擅长数学． 用英语怎么说

She's good at math

她擅长数学
She is very good at maths

我不太擅长数学
I am not very good at maths

be good at sth
do well in sth
be clever at sth
这三个短语都是擅长做某事的意思，套用句式即可,但要注意一下时态。
即：She is good at maths.
或 she does well in maths.
She is clever at maths.

She is good at Math.

She is good as Math

she is good at maths