kashishDhir
A higher interest rate is only one of the factors, albeit an important one, that keeps the
housing market from spiraling out of control, like it did earlier in the decade.
??? keeps the housing market from spiraling out of control, like it did
??? keep the housing market from spiraling out of control, as it did
??? keeps the housing market from spiraling out of control, as it did
??? keep the housing market from spiraling out of control, like
??? keep the housing market from spiraling out of control, like it did
Why are we using "Keep" instead of "keeps"
Hello,
kashishDhir. The answer is that
that is being used to mark a relative clause, one that specifies certain types of
factors within a larger number of them, thereby separating these factors from those that do not prevent the housing market from going out of control. That is, these factors
keep the market in check, and
a higher interest rate is only one such factor. The sentence would be conveying something different altogether if it placed emphasis instead on a lone factor:
A higher interest rate is the only one of [all] factors... that keeps...You may want to poke around on the forum for more information on relative clauses.
This post should get you started.
Good luck with your studies.
- Andrew