they have a little diffience,因此 usually use in composition.It‘s a offical word.when we chat,we never use it .所以 is a useful word.we use it everywhere.
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May 5, 2011
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Posted
First notebook entry: Introducing myself
I'm a university student.i have leaned english for more than 10 years,BUT i still fell nothing about leaning english.Now,i find this web. I wish it can give me some help.
