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I. Eight Types of Errors in the Sentence Correction Section
wA. Subject-Verb Agreement
wB. Modifiers
wC. Parallelism
wD. Pronoun Agreement
wE. Verb Time Sequences
wF. Comparisons
wG. Idioms

II. Three-Step Method to the Sentence Correction Questions

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The scope of our grammar guide is to give you a basic introduction to grammar. If you still need help, consider buying a book on grammar.


E. Verb Time Sequences

    A common error in the GMAT is to misuse verb tense. Different verb tenses indicate the order in which separate actions or events occur. Many GMAT sentences are complicated and involve several different actions occurring at different times. The correct tenses make the sequence of actions clear. To determine whether the verbs in a sentence are in the proper tenses, pick one event as a "base" action and then determine when other events occurred relative to it. Determine whether the events occurred PRIOR TO the base action, AFTER the base action, or AT THE SAME TIME AS the base event took place. Actions that start before the base may continue after the base.


VERB TENSE TIPS

1. You should look out for -ing forms.
Typically -ing forms are commonly used as junk answers on the GMAT.

    • I am walking
    • I was walking
    • I had been walking

As far as the GMAT is concerned, there are only two basic reasons to use an -ing form:

    • to emphasize the continuing nature of an action or
    • to emphasize that two actions are occurring simultaneously.

      In other words, the GMAT usually wants you to pick a simpler tense, one that doesn't use the -ing form, unless an action is continuing or happening during another action. A good way to remember this rule is to think of the word during and its -ing ending.

2. Be alert for the appearance of several verbs, indicating events that seem to have happened in sequence or at different times. In which case, pick one verb as the "base" in time sequence.

 

Example

If the cyclist wins the race, it will be representing an extraordinary comeback from his earlier cancer.

Solution
The win will not be "representing an extraordinary comeback;" it will "represent a comeback."

 

w F. Comparisons




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