04/07/2021
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Based on is the proper sequence to write the locution prepositional that is used in the sense of "based on". For example: The laboratory approved the use of the vaccine based on the good results of clinical trials.
Based on is not a correct expression.
Based on is a prepositional phrase formed by the preposition with, the noun "Base" and preposition in. It is used to mean “based on”, “based on” or “in accordance with”.
In addition, it is used to indicate that a facility or equipment is located in a certain place and that this site functions as a point of origin for certain activities. For example: The International Association of Physicians based on the capital of the country will distribute free medicines to people who need them.
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