当我们想知道英语

with the thought ofthinking of...

when we think of……

would you like to tell me your name?what's your name please?等

what's your name?(比较生硬)may I know your name?(比较客气)

这是主从句，一共有两个从句。what we want to know是由what引导的主语从句，意思是，我们想知道的事是。is是句子的谓语动词，whose pen this is是表语从句。整句意思是，我们想知道这是谁的钢笔。