The phrase "add a context" is correct and usable in written English.
It can be used when you want someone to provide additional information or background to clarify a situation or statement.
Example: "To better understand the situation, please add a context to your explanation."
Alternatives: "provide context" or "include background information".
"I wondered what would happen if you added a context to those props that was independent of their usual purpose.
A general method based on the frequency of overexpressed/amplified genes will not be able to identify these genes; but by adding a context, we can prioritise them statistically.
Intuitively we can suppose that context-dependent HMM can easily cope with this constraint but we will show that adding a context-dependent phasing model helps the trajectory formation system to better fit observed trajectories.
But adding a context-free performance by the not-nominated-in-category Dave Grohl makes Anohni's absence that much stranger, if not cruel.
Mr. Távora's main contribution is to add a historical context and make his Carmen a supporter of Gen. Rafael de Riego, who was executed for defending a constitution that King Fernando VII abrogated in 1814.
The picture starts with some squabbling over the best way to conduct the Texas Revolution -- an attempt to add a political context to the film, or as close as it comes to that.
So that means that you're not only writing what your views are: you're actually using others' - well-known authors' perhaps - to support, justify, or maybe add a different context to the view.
Media Monitor will add a little context to the data by showing the percentage change over recent time periods, and you can overlay multiple company profiles onto the same graph.
Just to add a little context, we sell three times as much organic soymilk than all of our competitors combined.
