n.标点符号，标点符号用法

The sky is blue, and the grass is green.
天空是蓝色的，草是绿色的。
Please," she said, "could you pass me the salt?"
“请，”她说，“你能把盐递给我吗？”
I have three siblings: a brother, a sister, and another sister.
我有三个兄弟姐妹：一个哥哥，一个姐姐，还有一个姐姐。
My favorite book is "To Kill a Mockingbird," by Harper Lee.
我最喜欢的书是哈珀·李写的《杀死一只知更鸟》。
It's raining—it's a typical April day.
正在下雨——这是典型的四月天气。
He was confused; he didn't understand the instructions.
他很困惑；他不明白这些指示。
The party will start at 7 p.m., so don't be late!
派对将在晚上7点开始，所以不要迟到！
She loves New York—the city that never sleeps.
她喜欢纽约——这个不夜城。
Yes," he replied, "I agree with you completely."
“是的，”他回答说，“我完全同意你的看法。”
The year 1999 marked the end of an era—the 20th century.
1999年标志着一个时代的结束——20世纪。