Independent sentences should be separated by a full stop and/or connected by conjunctions. Otherwise, they become run-on sentences.
In examples 1-2, two independent sentences are separated by a comma instead of a full stop. This is also known as a comma splice.
  

 

WRONG
RIGHT

1.

Since a good result is the biggest concern of parents and students which absolutely affect their future career, the approach of good academic result is always at the top priority in students’ and parents’ eyesinstead of learning experience and critical thinking which impede the new generation from getting into creativity.

Since a good result is the biggest concern of parents and students which absolutely affects their future career, the approach for a good academic result is always at the top priority in students’ and parents’ eyes; instead of learning experience and critical thinking which impede the new generation from getting into creativity.

2.

Due to the decline of the sectors above, Hong Kong has become a hub for creative industries which is a group of economic activities that exploit and deploy creativity, skill and intellectual property to produce and distribute products and services of social and cultural meaning a production system through which the potentials of wealth generation and job creation are realized. 

Due to the decline of the sectors above, Hong Kong has become a hub for creative industries. These are a group of economic activities that exploit and deploy creativity, skill and intellectual property to produce and distribute products and services of social and cultural meaning, plus a production system through which the potentials of wealth generation and job creation are realized.

 


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