using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"[^!?。\.\!\?]+[!?。\.\!\?]?";
string input = @"热带风暴尚塔尔是2001年大西洋飓风季的一场在8月穿越了 加勒比海的北大西洋热带气旋。尚塔尔于8月14日由热带大西洋的一股东风波发展而成，其存在的大部分时间里都在快速向西移动，退化成东风波后穿越了向风群岛。";
foreach (Match m in Regex.Matches(input, pattern))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx