<p>I'm completely confused about the difference between "In Which" and "where". I read Grammar Girl and a bunch of other site, but it really doesn't make sense.</p>
<p>Here is an example SAT question: </p>
<p>Joining a grass movement against inhumane working conditions, some consumers in the United States (have stopped buying) products from countries (in which) workers are (essentially) (a slave laborer).</p>
<p>“in which” and “where” are interchangeable here. The problem is “a slave laborer.” WorkerS cannot be A slave laborer. They have to be slave laborerS.</p>
<p>I was going to point out the same thing. There isn’t much difference between in which and where.</p>
<p>Really? Because grammar girl made a huge deal about the difference…</p>
<p>There are very subtle nuances of meaning. Not really pertinent in SAT.</p>
<p>What about
“the theory was based on …”
Vs
“the theory was based off of…”</p>
<p>My teacher kept on saying that it was a big deal and that it should always be based on. So if based off of is underlined then it’s wrong? Can someone confirm</p>
<p>Something tells me that the latter is informal/American style. Although the possibility of SAT’s testing this topic is very thin, personally, I would mark “based off of” as incorrect.</p>
<p>“based off of” is incorrect.<br>
“based on” is correct.
From
[based</a> around](<a href=“http://public.wsu.edu/~brians/errors/based.html]based”>based around | Common Errors in English Usage and More | Washington State University)
"You can build a structure around a center, but bases go on the bottom of things, so you can’t base something around something else.</p>
<p>Similarly, you can build something off of a starting point, but you can’t base anything off of anything. Something is always based on something else."</p>
<p>Ok thanks guys :)</p>
<p>One of the most important things you need to realize in SAT prep is what kinds of things are tested and what kinds of things aren’t. If you don’t know to look for plural vs singular errors (the majority of verb and pronoun errors), then you can get sidetracked by little issues like this. The SAT tests verb agreement, pronoun agreement, lists, comparisons, dangling modifiers, run-ons, fragments, and general too-wordiness, and not much else. :)</p>
<p>Well, I got it right. I’m just asking if “in which” is also wrong…</p>