问一下一个英语语法

应该是Just like the saying goes,no pains no gains.
表示“俗话说得好”还可以用：
Well goes an old , no pains no gains.
= As an old saying goes(runs, says),no pains no gains.
= An old saying goes,no pains no gains.
= It's an old saying (that)no pains no gains.
= There is an old saying (which) goes\runs\says,no pains no gains.

可以说As an old saying goes, no pains no gains.
Just like the saying,no pains no gains.这个也没错

there is a saying,no pains,no gains.
Saying is said,no pains,no gains.