I need a pen to write with.with一类的介词有时在句末,有时又没有,这是什么语法?

I want to writ a novel I need a pen to write 和 I need a pen to write with那句对?为什麽? I need a pen 对 a pen 提问 I need a pen to write 和 I need a pen to write with那句对? 为什麽?说说原因 Okay, and I need a pen to fill out the address.是什么意思? I need a pen to write down the address A pen OK,I 'll get____for youA.it B.that C.one D.some I need a pen _______A.to write B.to write with C.writing D.writing with帮忙看一看,说明原因 I need notebook and a pen.Can you------them to me?A:take B:have C:play D:bring two pen a books need i and组成句子 Do you have any pens?I need a pen to write _______ 我知道要用with但为什么呢? I need a pen to do my homework.请问不定式在句中做定语还是做状语.如何区别? I need a pen and some paper.I want to ____ a letter.A:write.B:buy.C:have.D:work writ a letter to my aunt 怎么读 The pen doesn’t work .I need to buy a new one to write_____The pendoesn’t work .I need to buy a new one to write_____A with Bin C on D /理由 The pen doesn't work.I need to buy a new one to write ____.A.with /B.in /c.on选哪个？理由 I use a pen to write.还是I use a pen to write with.为什么? 单项选择----you pass me a pen?I'd like to write down the telephone number.A need B could Cmust Dsho ( )6.Mary --- a notebook and a pen A.need B.needs C.to need D.to needs