In each sentence, you should have a colon (:) instead of the semicolon (;).
In the first and second sentences, you should have semicolons where the commas are.
There are three balls;one is white, another is blue, and the other is red.
He has three sons; one lives in Seoul, another lives in Ulsan, and the other lives in Busan.
There are a lot of bags; some are white, and the others are blue.
There are a lot of people; some are from America, others are from Japan, and the others are from the Philippines.
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Are the expressions above all grammatical? If there are any errors, would you correct them?
3 answers
With the exception of punctuation, those sentences are correct. Please check the sites below so that you will better understand the difference in usage between colons and semicolons.
http://leo.stcloudstate.edu/punct/semicolon.html
http://leo.stcloudstate.edu/punct/colon.html
http://leo.stcloudstate.edu/punct/semicolon.html
http://leo.stcloudstate.edu/punct/colon.html
Idk but you should get that ball thing checked out. *slaps leg*