了， 过， 着 - What is the difference amongst these three particles?
I was given a grammar test and instructed fill in the blank of each sentence with one of the following words; 了，过， or 着。I was completely lost. Can anyone offer a very preschoolish explanation of what sets these characters apart? I have used dictionary definitions, but am still not clear.
changyeNovember 22, 2009, 02:57 AM
(1) 过 (guo4) is used when you want to say something like "I have an experience of ～", like 我去过中国 and 我看过这本书.
(2) 着 (zhe) is used for an ongoing action （现在我看着书呢）, a continued action （门开着呢） and concurrent two actions (我站着吃).
(3) When a question seems to conform neither to (1) nor to (2), just choose "了". You have a good chance of answering correctly.