The GRE General Test measures an aspirant's verbal, quantitative, critical thinking and analytical writing skills which are covered in three sections:

Verbal Reasoning
Quantitative Reasoning and
Analytical Writing

Verbal Reasoning GRE Tips:

Become familiar with the question format.

Read a wide variety of text to exercise your reading comprehension. Instead of focusing on word lists, experts recommend reading widely and deeply to expand your understanding of vocabulary and language usage.

Seek help if you need it.
Get plenty of practice with sample test questions.
Pace yourself.

GRE Exam structure:

The three sections of the GRE Test pattern are discussed below:

Verbal Reasoning

This section tests your comfort level with text and grammar. The Verbal Reasoning section of the GRE Test Pattern contains three types of questions:

a. Reading Comprehension
b. Text Completion
c. Sentence Equivalence

Top school accepts GRE:

Institute GRE
Harvard Business school 163-168
University of Pennsylvania: Wharton 162-167
Stanford Graduate School of Business 163-168
Columbia Business School 161-166
MIT: Sloan 161-166
University of Chicago: Booth 162-166
University of California at Berkeley: Haas 162-167
Northwestern University: Kellogg 162-166
Yale School of Management 162-166
New York University: Stern 161-166