people use pens to write 为什么不加with

people use pens to write 为什么不加with we use pens to write被动句 I use a pen to write.还是I use a pen to write with.为什么? write同义词两个单词的.现等!They use pens to write.(同义句）They use pens t We use pens for ____ (write) we ofen use pens _____(write) The pen is good to write为什么要加with 被动语态 We saw him work last night We use pens to write Most people use their right -----(hand)to write words we have pens and pencils_____(write)with We write with pens这个句子对吗? we write with pens同义句