Even candidates with good vocabulary fail to reach 6.5 due to these specific errors. A high-quality PDF will dedicate entire chapters to avoiding them.
For many IELTS test-takers, the difference between a Band 5.5 and a Band 6.5—or the leap from a Band 6.5 to a Band 7.0—comes down to one specific criteria:
Academic English is dense. Instead of "The economy grew quickly," high-scorers write "The rapid growth of the economy..." This shifts the focus to the concept, not the action.
Below is an overview of the key grammar requirements for advanced bands, inspired by materials like the IELTS Grammar for Bands 6.5 and Above book. 1. Complex Sentence Structures
Achieve Band 6.5+ grammar, and you unlock the ability to express complex ideas clearly. That is the definition of a "good user" of English.