Presentation: Contrast the "Result" vs. the "Sequence."
1.	Present Perfect: Action in the past with a result now (e.g., "Science has changed our lives").
2.	Past Perfect: The "Past of the Past." An action completed before another past action (e.g., "By the time Newton saw the apple, he had already studied mathematics").


present-perfect-vs-past-perfect-grammar-explanation_167559.pptx

Present Perfect vs Past Perfect grammar explanation

present-perfect-vs-past-perfect-grammar-explanation

Let's do English ESL general grammar practice. Presentation: Contrast the "Result" vs. the "Sequence."
1.	Present Perfect: Action in the past with a result now…