I am trying to understand how to use two verbs in one sentence to explain something. For example, I would like to say that my new idea is based on one idea. Also, it is an extension of the same idea. How to express it correctly in English?
This new method is based on and an extension of the work of (reference).
I feel that it is not correct to use two verbs in such way? I think that I need to delete one of them? is that correct?
Any help, please?