I've studied

Grammar usage guide and real-world examples

Replaces "studied" with a direct statement of knowledge, altering the emphasis from the act of learning to the state of knowing.

Implies a deeper understanding and familiarity, suggesting a level of expertise beyond basic study.

Focuses specifically on research, implying a systematic investigation rather than general learning.

Suggests a close and detailed inspection, often implying a more critical approach than simply studying.

Highlights the process of breaking down information to understand it, adding a layer of analytical skill.

Indicates acquaintance and some level of understanding, but not necessarily in-depth study.

Similar to researched but can imply a more formal or official inquiry.

A more formal way of indicating knowledge, shifting the focus to the possession of facts.

A broader and less intense term than studied, suggesting general acquisition of knowledge.

Similar to familiar but can suggest a more distant or superficial knowledge.