When you have someone tell you instantly, "Hey, that expression isn't really something that native speakers use, you should use this instead," you'll realize, 'Oh okay, I know that I often use this kind of textbook expression, so I'm going to use this expression that you suggested instead."
當有人立刻告訴你:「嘿,這種講法其實不是母語者會使用的,你應該講這個,」這時你會意識到,「好喔,我知道我經常使用這種教科書上的表達方式,那我之後打算改用你建議的這種講法。」