>>283507844
Kids are retarded. They will constantly make basic grammar mistakes until they're almost 8 years old. It's extremely common to hear a 6-7 year old say shit like "I runned fast" or "I eated it". They make mistakes all the time, and the adults around them constantly correct them. Kids are actually pretty shit at learning languages when you think about it. The reading level for Harry Potter is like 9 years old. Can you imagine taking NINE fucking years to read a book like Harry Potter. If you started right now, and were consistent with your studies, you could be reading Harry Potter in Japanese within 2-3 years. Not that you'd want to, because it's a shitty book, but that's besides the point lol.
Maybe this is obvious but kids take 8-10 years to speak like... an 8-10 year old. That's with 24/7 constant full time immersion, daily English class at school, and all the adults in their lives constantly correcting their stupid mistakes. That is not particularly impressive progress lol. But they do eventually learn.
The main difference between immigrant kids and parents is the parents almost always surround themselves by other people that speak their own native language and only engage with tv/internet in their native language. The kid is at school interacting in English 8 hours a day while the parent is delivering DoorDash and talking on the phone in Arabic with his brother in Syria. Of course the kid makes better progress.