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Need advice on how to improve Polish language skills [134]
So for example a child in an English-speaking country learns 100 words. That child can use those words in a sentence and communicate.
You're making a mistake by equating 'using words to communicate' and 'using a language'. I've heard lots of people communicate with English words in a way that I would forcefully say is not 'speaking English'.
The fewer number of endings in English makes it possible to have a conversation like the following:
B: How much this cost?
A: That's cost forty Euro.
B: That too much. You make cheaper.
A: No is too much. Is very cheap. You buy, yes?
A; I not sure. Maybe later I come back and buy.
But I would argue that the conversation is a good example of effective communication but it's not in English, it's not in any language. It's just words thrown together.
I've heard similar convesations in Polish (though usually just from the buyer or seller, not both at the same time).
First advice: STOP TRANSLATING, you need to absorb lots of Polish sentences (and then learn how to modify them). Concentrate on absorbing patterns and only then try to express your own thoughts.
The old (first) version of Teach Yourself Polish by M. Corbridge-Patkaniowska was good for that (though a lot of the language was dated). Avoid the new version, which isn't anything special.