1. Because the Buffalo-fighting Festival took place in Do Son last Saturday, there were so many people. /There were so many people because the Buffalo-fighting Festival took place in Do Son last Saturday. (Bởi vì chọi trâu diễn ra ở Đồ Sơn thứ 7 vừa rồi, có rất nhiều người ở đó)

2. We won't hold the festival if it costs too much money./ If it costs too much money, we won't hold the festival. (Chúng ta sẽ không tổ chức lễ hội nếu nó tốn quá nhiều tiền)

3. When the prince saw Sleeping Beauty, he kissed her on the forehead./The prince kissed Sleeping Beauty on the forehead when he saw her. (Khi hoàng tử thấy người đẹp ngủ trong rừng, chàng đã hôn lên trán nàng)

4. The tortoise was running while the hare was sleeping./ While the hare was sleeping, the tortoise was running. (Con rùa đang chạy trong khi con thỏ đang ngủ)

5. Although the girl worked hard, her stepmother wasn't happy./ Her stepmother wasn't happy although the girl worked hard. (Cho dù cô gái làm việc siêng năng, mẹ kế của cô không bao giờ hài lòng)