I not have a pen 为什么这个句子错了,好象是在not前面+个do吧,在句子中什么时候用do,我很迷惑.

判断：I have a pen.____ I have pen.____ I not have a pen 为什么这个句子错了,好象是在not前面+个do吧,在句子中什么时候用do,我很迷惑. I do not have a pen and a pencil.句中哪里错了 I can't find my pen yet;in fact,I am not sure__I could have done with itA.whereB.what选B,A为什么不对呢? I have a good pen. 怎样强调a good pen? Do you have a pen Yes ,_______.A.I do B.I have C.I have not D.I don't请问选那个 I have a pen ,haven't I 还是I have a pen ,don't I DO you have a pen?的回答是什么?是Yes I have吗为什么 I have a pen 变否定句 I have a new pen friend i ( )have a pen friend in england. She doesn't have(not have)a pen. Mike ____ (not like) running.I ___(not have) a computer.Tom ___(not have) a red pen.怎么填?Help me!把因为所以说清楚，please. 英语翻译Had i know this was an oral exam ,i would not have brought a pen and paper. I have a pen. 改成疑问：Do you have a pen?和Have you a pen?哪句对? I have a good pen.对 good 提问.I have a good pen.对 good 提问. I have a pen as she ///I have a pen like hers. （I have a pen to write with）句中 为什么加 with