How can I make a translucent object cast a shadow

Questions & Answers
1

I want a translucent object to cast a shadow.
The object in question is not translucent enough not to have a shadow making it look weird.

2

try this one

Shader "Transparent/Diffuse with Shadow" {
Properties {
	_Color ("Main Color", Color) = (1,1,1,1)
	_MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
}

SubShader {
	Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
	LOD 200
	Blend SrcAlpha OneMinusSrcAlpha
	CGPROGRAM
	#pragma surface surf Lambert addshadow
	
	sampler2D _MainTex;
	fixed4 _Color;
	
	struct Input {
		float2 uv_MainTex;
	};
	
	void surf (Input IN, inout SurfaceOutput o) {
		fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
		o.Albedo = c.rgb;
		o.Alpha = c.a;
	}
	ENDCG
}

Fallback "Transparent/VertexLit"
}