first midst and last

例句：

1. 1. The first thing I did after arriving was to call my mom.
   我到达后做的第一件事是给我妈妈打电话。
2. 2. He is the first person to be selected for the team.
   他是被选中参加团队的第一人。
3. 3. She is the first in her class to graduate.
   她是班上第一个毕业的学生。
4. 1.The middle of the road is where cars usually stop.
   马路中间通常是汽车停靠的地方。
5. 2.The middle of the table is where we will sit.
   桌子中间是我们坐的地方。
6. 3.The middle of the book is blank.
   书的中间是空白的。
7. 1. The last train leaves at 9:00 pm.
   最后一班火车在晚上9点发车。
8. 2. The last word in the story was a punchline.
   故事的最后一句是一个笑点。
9. 3. The last straw broke the camel's back.
   最后一根稻草压垮了骆驼。