i am not understand you.表示听不懂对方说什么,能这样说吗

Can you understand what I say?你能明白我说什么吗? 当对方说thank you时 为什么要用Don not mention it 回答,I am happy to help 我很热,能这样说吗?i am hot 跟外国人说英语听不懂对方说什么该怎么办? 男说：you are special 女说：and i am not alone 女是想说什么? 如果我说I know you're not kidding.对方说no.那他到底是kidding还是not kiddin 女朋友说I understand.I just do not care. 朋友说 I am not coming 如过对方说:I can not concentrate on my work these days.我该说什么啊(用英语 i don´t understand可以这样说吗,这句话成立吗 Do you have a dog?肯定回答时能这样说吗?Yes,I do.或者说Yes,I have. I am so love you,but you always do not understand me .Do I s