yester Ann introduced me to her husband. As i (see) him, i (know) that i (meet) him before. we went to primary school together (giải thích tại sao)
yester Ann introduced me to her husband. As i (see) him, i (know) that i (meet) him before. we went to primary school together (giải thích tại sao)
yester Ann introduced me to her husband. As i (see)saw him, i (know)knew that i (meet)had met him before. we went to primary school together
1. saw (hành động trong quá khứ)
2. knew (hành động trong quá khứ)
3. had met (hành động xảy ra trước 1 thời điểm trong quá khứ)