diff --git a/Basic-practice-of-FSharp/Basic-practice-of-FSharp.fsproj b/Basic-practice-of-FSharp/Basic-practice-of-FSharp.fsproj
index 91817fe..6645244 100644
--- a/Basic-practice-of-FSharp/Basic-practice-of-FSharp.fsproj
+++ b/Basic-practice-of-FSharp/Basic-practice-of-FSharp.fsproj
@@ -2,6 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net6.0</TargetFramework>
+    <LangVersion>6.0</LangVersion>
     <RootNamespace>Basic_practice_of_FSharp</RootNamespace>
   </PropertyGroup>
   <ItemGroup>
@@ -16,5 +17,6 @@
     <Compile Include="Loop.fs" />
     <Compile Include="TypeCreating.fs" />
     <Compile Include="PatternMatching.fs" />
+    <Compile Include="ComputationExpressions.fs" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/Basic-practice-of-FSharp/ComputationExpressions.fs b/Basic-practice-of-FSharp/ComputationExpressions.fs
new file mode 100644
index 0000000..9b12a32
--- /dev/null
+++ b/Basic-practice-of-FSharp/ComputationExpressions.fs
@@ -0,0 +1,104 @@
+module ComputationExpressions
+// 计算表达式
+
+// 语法
+// builder-expr { cexpr }
+
+// 计算表达式类似于一种monads,monoid, monad的通用型容器
+// 并且它们并不绑定到单个抽先,也不依赖于宏或其他形式的元编程来实现上下文相关语法
+
+// F#内置计算表达式
+
+// 序列表达式
+
+// seq { cexpr }
+
+// yield表示从计算表达式中返回值,以便作用于IEnumerable<T>
+seq {
+    for i = 0 to 10 do yield i * i
+}
+|> printfn "%A"
+
+// 也可以存在条件
+
+let weekdays includeWeekdays =
+    seq {
+        "礼拜一"
+        "礼拜二"
+        "礼拜三"
+        "礼拜四"
+        "礼拜五"
+        if includeWeekdays then
+            "礼拜六"
+            "礼拜七"
+    }
+
+weekdays true |> printfn "%A"
+
+// yield!将计算平展
+seq {
+    yield! seq { for i = 0 to 3 do yield i * i }
+    yield! seq { for i = 0 to 3 do yield i * i * i }
+}
+|> Seq.iter (printf "%A ")
+printf "\n"
+
+// 查询表达式
+
+// query { cexpr }
+
+query { 
+    for i in 1..10 do
+    select i
+    contains 5  // 查询列表是否包含5,如果是返回true,反之为false
+}
+|> printfn "%A"
+
+query { 
+    for i in 1..10 do
+    select i
+    count // 计数
+}
+|> printfn "%A"
+
+query { 
+    for i in 1..10 do
+    last // 查询列表中最后一个元素
+}
+|> printfn "%A"
+
+query { 
+    for i in 1..10 do
+    lastOrDefault // 查询列表中最后一个元素,如果不存在,则发挥元素默认值
+}
+|> printfn "%A"
+
+query {
+    for i in 1..10 do
+    where (i = 4) // 以指定谓词剔除元素,谓词必须使用括号
+    select i
+}
+|> printfn "%A"
+
+// ...
+
+// 异步表达式
+
+// async { cexpr }
+
+// 任务表达式
+
+// task { cexpr }
+
+// 自定义计算表达式
+// 所有的计算表达式都必须实现Yield方法
+// 其他自定义计算使用[<CustomOpertion>]特性标记
+type MyComputationBuilder() =
+    member this.Yield(x) = x
+
+let mycom = MyComputationBuilder()
+
+mycom {
+    yield 1
+}
+|> printfn "%A"
\ No newline at end of file