Has anyone used ChineseSkill here? This is the best app I've seen so far for learning chinese . But why am I wrong here?
I am used to hearing phrases like this: 我住在这儿 To say "I lived here [before]", however, it seems you can't use 了 at all: 以前我住在这儿 Why is this not "以前我住了在这儿"? Is there a formal reason why 了 ...