Quarter Wit, Quarter Wisdom Using Like vs. As on the GMAT Verbal Section

If you have seen the Veritas Prep  curriculum, then you know we frequently highlight the strategy of â€Å"Think like the Testmaker  to answer  GMAT questions. Recently, we had a student question the grammatical validity of this construct this brought the â€Å"like† vs. â€Å"as† debate  to mind, so we decided to tackle it this week. When should you  use â€Å"like†Ã‚  and when should you use â€Å"as† in a sentence? Both words can be used in  comparisons, however the  structure of the sentence will be different in the two cases. This is because  traditionally, â€Å"like† is a preposition and â€Å"as† is a conjunction   a  preposition takes the form of an  object while a conjunction takes the form of a clause. Therefore: Using â€Å"like,† we compare nouns/pronouns (including gerunds). Usually, a single verb will be used. Using â€Å"as,† we compare actual actions. There will be two verbs used when we compare using â€Å"as.† So,  this is how we are going to compare like and as: He runs like a madman. A single verb, â€Å"runs.† He runs as a madman does. Two verbs, â€Å"runs† and â€Å"does† (which  is equivalent to  does run). In the same way, both of the following sentences are correct: Think like the Testmaker. Think as the Testmaker does. But beware â€Å"as† used with a  noun or pronoun alone does not mean that this usage  is incorrect. â€Å"As† can also be used to show a role or capacity. For example, in the sentence, She works as a consultant, the word as  means that she works in the capacity of a consultant. There is no comparison here, but the sentence is still grammatically correct. Also, we usually use â€Å"like† in the case of hypothetical comparisons. Take, for instance, the sentence, She screams like a banshee. Here, it would be  odd to say, â€Å"She screams as a banshee does,† because we don’t really know how a banshee screams. Let’s look at a few GMAT Sentence Correction questions now: Like many self-taught artists, Perle Hessing did not begin to paint until she was well into middle age. (A) Like (B) As have (C) Just as with (D) Just like (E) As did In this sentence, the word â€Å"like† is correctly comparing â€Å"Perle Hessing† to â€Å"many self taught artists.† There is no clause after â€Å"like† and we are using a single verb. Hence, the use of â€Å"like† is correct  and our answer is A. Not too bad, right? Lets try  another question: Based on recent box office receipts, the publics appetite for documentary films, like nonfiction books, seems to be on the rise.   (A) like nonfiction books   (B) as nonfiction books   (C) as its interest in nonfiction books   (D) like their interest in nonfiction books   (E) like its interest in nonfiction books This sentence also has  a comparison, and it is between â€Å"appetite† and â€Å"interest†Ã‚  and how they are both are on a rise. Answer choice E  compares â€Å"appetite† to â€Å"interest† using â€Å"like†Ã‚  as a  single verb. None of the answer choices  have â€Å"as† with a clause  so the answer must be E. These were two simple examples of â€Å"like† vs. â€Å"as. Now lets look at a higher-level GMAT question: During an ice age, the buildup of ice at the poles and the drop in water levels near the equator speed up the Earth’s rotation, like a spinning figure skater whose speed increases when her arms are drawn in.   (A) like a spinning figure skater whose speed increases when her arms are drawn in   (B) like the increased speed of a figure skater when her arms are drawn in   (C) like a figure skater who increases speed while spinning with her arms drawn in   (D) just as a spinning figure skater who increases speed by drawing in her arms   (E) just as a spinning figure skater increases speed by drawing in her arms There is a comparison here, but between which two things? Answer choice  A seems to be comparing â€Å"Earth’s rotation† to â€Å"spinning figure skater, but these two things are not comparable. Option E is the correct choice here it compares â€Å"speed up Earth’s rotation† to â€Å"skater increases speed. Therefore, our answer is E. Getting ready to take the GMAT? We have  free online GMAT seminars  running all the time. And, be sure to follow us on  Facebook,  YouTube,  Google+, and  Twitter! Karishma, a Computer Engineer with a keen interest in alternative Mathematical approaches, has mentored students in the continents of Asia, Europe and North America. She teaches the  GMAT  for Veritas Prep and regularly participates in content development projects such as this blog!