题目内容：

And thank you for giving it to me.
Barry:You know,you were right?I mean,I thought we were happy.We weren't happy.But withMindy,now I'm happy.Spit.
Rachel:What?
Robbie:Me.(Spits.)
Rachel:Anyway,um,(Gets the ring out of her purse.) I guess this belongs to you.And thank youfor giving it to me.
Barry:Well,thankyou for giving it back.这里的give为什么要加ing?

优质解答

你的问题与句子中的搭配有关：
前面有一个词的固定搭配短语：
因某事感谢某人：thank sb for doing sth
这个结构中,for（因为；由于） 是介词,后面通常需要接【名词、代词、动名词】作宾语.
正因此,give 在介词for 后面,就需要用 giving.
祝你开心如意!