My Chinese has never been very good, but by some miracle, I've been able to keep most of my speaking fluency and some of my reading abilities.
After my husband and I found out we were expecting two and a half years ago, I made a mental note that I would speak solely in Chinese to my child(ren). I knew early on that my children would only be as good as or worse at Chinese than I was, so I was going to have to work really hard to pass on as much as I could.
Now, there was a second factor into this situation: my husband! Unfortunately, his Chinese skills when we got married were not very good. When people asked about his language skills, I'd have to explain to them that his parents were fluent in too many languages, and because of that, he never got to really focus on anything other than English. It's also just really hard to pay attention in Chinese school as a kid growing up: I'm guilty of that myself.
One day in the car, this conversation popped up, and it was noteworthy (and funny) enough for me to share it with his permission:
Two years later, I have to say, teaching my daughter Chinese hasn't felt like very much teaching at all because complete immersion is the best way to learn, and she has been completely immersed since she was born. I also have to say I've never actually pushed my husband to learn Chinese from me. Sure, I've joked with him about it here and there, but I've never sat him down and told him straight up: you will learn Chinese and I will teach you. We maybe had one evening when I taught him colors. :)
Our daughter really started talking and took off with her language skills around 18 months. I will never forget the day I was laying in bed one morning, pregnant with my son, and I see my daughter come walking through our bedroom door to my side of the bed. She came up to me and said very clearly, "妈妈起来.” Mommy, get up. And with that, I was wide awake, getting up, and amazed at how fast my daughter was growing up right before my eyes.
When she started speaking more, I noticed my husband would ask me what certain words meant as I said them. I would tell him and he'd say it a few times. I'd correct him if it was way off in pronunciation, but for the most part he was close.
Slowly, he picked up phrases and started saying them more: 洗澡, 吃饭, 睡觉, 过来。
And now he's saying even more phrases and even getting close to using complete sentences: 最后两口, 躺好换尿布, 你的 (object) 在哪里, 穿衣服。
Toddlers learn language so quickly at their young age - it's absolutely amazing. My daughter will say words or phrases during the day and I'll ask my husband, "Where'd she learn that from?"
And he usually always replies, "I don't even know what that means so she didn't learn it from me!"
Of course, she learned it from me, but I didn't realize she could remember so much of what she had heard me say.
There was one day I was speaking to my daughter in Chinese and then I turned to my husband to ask him a question. I almost asked him in Chinese, not having completely switched languages in my head, but I caught myself.
Unfortunately for him, her language skills will surpass his - they probably already have - and chances are, they will be better than his for her entire life. She's got the advantage of time on her side. However, I am very proud of him for learning as much of the language as he has in the last year two years. However valid my concern was two years ago, I am not concerned anymore. One of these days, I may not have to catch myself to switch languages, and he may even be able to reply (in Chinese!)