“While
a bribe may seem like a good idea, you really better think that one through”
“While
the country borders the Indian Ocean, the
government has had a difficult time supplying adequate
water for the population”
that ≠ which: These troublesome words are not interchangeable. The pronoun that is restrictive, referring to one specific object, whereas which is nonrestrictive, referring to a choice that must be made when more than one object exists (Hart 1976; Strunk and White 1979). In most cases, that will directly follow without punctuation, whereas which is usually preceded by a comma.
Examples: “I keep
a top-secret list that contains the names of students not attending class”
“It
is better to give than receive, which is good motto for life”
“The air
pressure that exists outside the plane at 35,000 feet is about
one-fourth of sea-level pressure, which is a good reason why the environment
in the plane is controlled”
“Over 54 tons of
organic pollutants were discharged to waterways in the