How long does it take for children to immigrate to the United States to master English?

When you really master English, you don't need to think about translation when you hear English.

Watch more American TV shows and movies. You can watch movies without listening to English letters. Just look more.

Your English is bound by domestic education. I am an immigrant, too. To tell the truth, I never recited words when I was studying English in China, but I like watching American TV shows and movies. After reading too much, you will naturally learn the grammar of words. Don't you think when you can't speak, you will come into contact with it as soon as you open your mouth? Then you start learning pinyin in primary school and kindergarten.

So don't worry, after a long time, watch more European and American movies and TV dramas and listen to more European and American music.