定语从句的whichYesterday Emily was wearing the new dress which I
定语从句的which
Yesterday Emily was wearing the new dress which I gave her.
I saw the pictures which you sent to me.
Send me sth,send it to me,Give me sth.give it to me
为什么第二句是you sent to me?而第一句是I gave her? 不是I gave to her?