diff --git a/en/02.3.md b/en/02.3.md
index 9f7a9c503..cd31d6d78 100644
--- a/en/02.3.md
+++ b/en/02.3.md
@@ -105,7 +105,7 @@ There are two important operations in loops which are `break` and `continue`. `b
 	// break prints 10、9、8、7、6
 	// continue prints 10、9、8、7、6、4、3、2、1
 ```	
-`for` can read data from `slice` and `map` when it is used together with `range`.
+`for` can read data from `array`, `slice`, `map` and `string` when it is used together with `range`.
 ```Go
 	for k,v:=range map {
     	fmt.Println("map's key:",k)