高分作文秘诀之一：使用正确的时态。例如：
Instead of (不要说：)A big fire destroy the forest which belong to the villagers.
Use (要说：)A big fire destroyed the forest which belonged to the villagers.
Instead of (不要说：)The village changed greatly since he left his hometown.
Use (要说：)The village has changed greatly since he left his hometown.
Instead of (不要说：)Nancy had promised to come tonight.
Use (要说：)Nancy promised to come tonight.
