pen pal wanted为什么want要用过去式
问题描述：
pen pal wanted为什么want要用过去式
答
I could be your pen pal.
But i think you could not find a good pen pal in China,discover a foreigner to improve your English is better.I have lots of pen pal on board.That must advance your English level. You could add me to your friend list.
Some Teen newspaper also have lots of person's e-mail address.You may have a try.
答
wanted不是过去式,而是过去分词,表示被动,完整的句子是
pen pal that is wanted by me