long time no contact 这样表达对不？

long time no see是用的多了才被接受的 contact最好还是不要这样说了
还是说：It has been a long time since we last contacted each other. 比较好

不对， long time no see 也是非正式英语，是中国式英语，其实是用的多了默认的
It's been long time that haven't contacted with you .

你想表达的意思是：很久没有联系了，对不？你这句话也是对的，还可以说:
(we)haven't communicated with each other for years
It has been some time since we have had contact you.

不对，你这个是Chinglish
好久没联系应该这样说
It's has been a long time that we had not contact each other.

对 好久没联系了
long time no see 好久不见

这样不对
但是我觉得你这样说,对方能听懂
也是没有问题的,语言无非就是用来交流的,听懂就行了

long time no see.是可以的。是固定句式