something to remember me by~为什么要加by啊?

something to remember me by~为什么要加by啊? it's something to remember me by he give me something to remember him by.需要介词By吗?为什么? he gave me something to remember him by something about his class___often__ (tell)to me by my brothe The boy was seen to run by me yesterday为什么加to 不用learning to forget 为什么加by啊 by listening to tapes为什么要加ing we were surprised by the view为什么要加by不加by可不可以 英语翻译As time passing me by,something changed,something remain 英语翻译By thinking of something worse By comparing yourself to 初中英语词汇运用My parents e____ me to do something by myself when I