Ok, English is not my first language. My mother tongue is Vietnamese. There are 5 people in my family: my parents, my wife, my son and me.
I decided to teach my child bilingually. So, about 6 months ago I started speaking English with my son. He is 2 years and 2 months old now.
My parents and my wife speak Vietnamese to him while I speak English to him for about 3 hours per day.
In the beginning, he didn't speak any English words although he could understand some such as "pick it up, go to the bathroom, go to bed, etc".
However, since 2 months ago, he has been speaking English more and more using some phrases such as "where are you?, they're sleeping, I kiss the bunny, etc...", but the problem is that sometimes he uses articles and plurals incorrectly.
For example, he sometimes says "a Mommy's sleeping" instead of "Mommy's sleeping"
or "the bunnies" instead of "the bunny" (there is only 1 bunny in my house).
Maybe, she mixes up "a & the" ("the bunny sleeping" and "a bunny sleeping") as I sometimes say "give me the bunny" and other times say "that is a bunny" (show a picture of a bunny)
My question is
Is it common that 2 or 3 year old children use articles and plural incorrectly?
Note: I only use phrases that I found in textbooks or in dictionaries because it is safer due to the fact that my English is not as good as natives'.