要是当初你听了父母的劝告，你就不会惹上这麻烦了翻译

这里用虚拟语气比较好，表示假设。

要是当初你听了父母的劝告，你就不会惹上这麻烦了。
Had you taken your parents' advice,the trouble could have been avoided.

要是当初你听了父母的劝告，你就不会惹上这麻烦了
If you hear your parents advising, you will not get this trouble.

If you listen to your parents, you won't meet the trouble.

You'd never get into this trouble if you'd taken your parents' advice.

要是当初你听了父母的劝告，你就不会惹上这麻烦了
If you listened to you parents that day,you would not in trouble now.

You wouldn't have gotten into trouble if you were to listen to your parents.