The way kids speak is not only influenced by parents because they are not only surrounded by parents. They have friends, cousins, teachers and relatives. They also watch TV.They live in the social environment. When kids hear how people are used to saying based on what they hear in their lives, they acquire that language and correct themselves naturally. So they won't just follow the way you speak Chinese because they follow how people he can get in touch with speak.

说就行了！整就中了！

至少让他有一个语言环境！

我觉得没有什么问题。每个孩子在成长过程中，都会受到父母质量不好的输出。在中国，很多父母没有接受良好教育或者父母一方的语言输出并不是很标准。孩子以后还是可以说标准的普通话。如果你担心的话，可以考虑让孩子看一些中文的电视，最后孩子会筛掉不规范的输出。孩子的母语能力是很强大，还是要有自信！

你们可以给孩子找中文学校啊，而且你女朋友也可以纠正孩子的错误，应该不会有很大的问题。小孩子很聪明的不要太过担心了，用爱教育才是最重要的不是吗。