THIS IS THE FIRST TIME + S +HAVE/HAS+P2

3.

This is the first time + S +have/has+P2: Lần đầu làm gì

=> S +have/ has + never + P2+ before

=> S+ have/ has not+ P2+ before

Ví dụ: This is the first time I have met him

=> I have never met him before.

=> I haven’t met him before.