English Japanese here. Born in Japan, moved to Aus as a kid, so native level fluent in both languages. I get asked Op's type of questions a lot, ie. "Which language do you think in?" and I always answer "Depends on which country I'm currently living in".
Most months of the year I live in Aus, so I think and speak in English (like I am right now). But when I visit my family in Japan, I have a small period of 2 ~ 3 days where I think in English but speak Japanese or vice versa. Then in about a week my brain switches gears completely and I think & speak in Japanese.
It's actually a really surreal experience. During that transitional period I become really self-aware of how I'm using 2 languages at once, and it almost feels like I'm switching personalities from 'English me' to 'Japanese me', and once I've made the switch I find it really hard to form sentences in the other language. I think a lot of it comes from your surrounding environment and what language is being used around you.
Most months of the year I live in Aus, so I think and speak in English (like I am right now). But when I visit my family in Japan, I have a small period of 2 ~ 3 days where I think in English but speak Japanese or vice versa. Then in about a week my brain switches gears completely and I think & speak in Japanese.
It's actually a really surreal experience. During that transitional period I become really self-aware of how I'm using 2 languages at once, and it almost feels like I'm switching personalities from 'English me' to 'Japanese me', and once I've made the switch I find it really hard to form sentences in the other language. I think a lot of it comes from your surrounding environment and what language is being used around you.