MatthewJoseph wrote:
I think sentence correction is certainly the most difficult part of the GMAT.
One way to handle this is to diagram the sentence to make sure everything is in agreement. Each proposed modification they have almost always must agree with something else in the unchanging portion of the sentence. If you can decide what variable words must agree with what static words you can choose the answer that makes the most sense.
Alternately, a friend of mine had success with reading the sentence all the way through and then writing a correction on the scrap paper even before he looked at the multiple choice answers. Doing this allowed him to bring everything into agreement without getting tangled in choosing the answers. He then reconciled his sentence with the proposed changes.
Actually, I would argue SC is the easiest to improve. Improving your RC skills is usually a lifelong path. There are strategies you can use to improve your RC test-taking ability in the short run, but if you really want to improve reading comprehension, it's going to take a lot more time than it would take to improve SC.
You see, with SC - there are only so many types of sentence structures that they can test you on. If you an identify where all the booby traps can potentially be, you'll do a lot better.
Reading the sentence all the way through and then writing a correct version on a separate sheet of paper --mmm, I'm not sure about that. Doing that might be a good exercise. But for the purposes of the exam, if you read the entire sentence all the way through, you would be wasting a lot of time. Remember, the test is timed. If you don't finish it, you'll be HEAVILY penalized. You don't want that.
Remember, you want to study smart, not hard. SC can be hard especially if you're used to using incorrect grammar in your everyday speech. The GMAT guys want things a certain way. All you need to do is understand what they want, and you'll get what you want.