基本

Stability is the foundation upon which a country can flourish and grow.

Reform is the basis upon which an enterprise can be energized.

These are fundamental questions that call for careful consideration.

basic training

basic concept; fundamental view

primary working conditions

basic programme

fundamental change

main idea of an article

main contents of a book

life's prime need/want

essential/primary requirement

fundamental form

primary facts

fundamental function

These theories are essentially correct.

Our opinions are on the whole the same.

Basically, I agree with your proposals, but there are a few small points I'd like to discuss.

The land is for the main part uncultivated.

be basically true; be true in the main

turn for the better by and large