I'm not sure why this question has not been posted yet (I might have overlooked), but is it possible to communicate with native Chinese people even if you don't change its tones?
For example, I only memorize Chinese words by pinyin just to be able to type in the keyboard, like
wǒ. And thus I want to speak all the sentence as if all the words consist of the same tone.
But I just wonder if it is possible to make myself understood in oral communication even if I only use the same tone (or first tone). Does Chinese people understand it, or are they not able to understand it if it is not pronounced properly? Or more concretely, how much can I make a communication (e.g. 70%, 30%, etc...)?