或许你对本次袭击有些怀疑。要是那样的话，你可能会有兴趣了解伍兹小姐目睹了一切。

Perhaps you've some doubts about the attack. In that case it may interest you to know that Miss Woods witnessed it.

《柯林斯英汉双解大词典》

是的…我知道…要是那样的话，你应该讲礼貌。

Yes... I see... in that case, you should be polite.

youdao

要是那样的话，对他的死我就要负部分的责任。

In that case I was partly to blame for his death.

youdao

My parents would be upset with me if I did.

要是那样的话，我的父母会很失望的。

I'd rather 实战 - SpeakingMax英语口语达人