update en/application-dev/internationalization/i18n-guidelines.md.

Signed-off-by: Nking_he <6384784@qq.com>

en/application-dev/internationalization/i18n-guidelines.md

@@ -4,7 +4,7 @@ This development guide describes how to use i18n APIs that are not defined in EC
 
 ## Obtaining System Language and Region Information
 
-APIs are provided to access the system language and region information.
+You can use APIs provided in the following table to obtain the system language and region information.
 
 
 ### Available APIs
@@ -344,14 +344,14 @@ When a text is displayed in more than one line, [BreakIterator](../reference/api
 
    
    ```
-   var firstPos = breakIterator.first(); // Sets a BreakIterator object to the first break point, that is, the start position of the text.
-   var lastPos = breakIterator.last(); // Sets a BreakIterator object to the last break point, that is, the position after the text end.
-   // Moves a BreakIterator object forward or backward by a certain number of break points.
+   var firstPos = breakIterator.first(); // Set a BreakIterator object to the first break point, that is, the start position of the text.
+   var lastPos = breakIterator.last(); // Set a BreakIterator object to the last break point, that is, the position after the text end.
+   // Move a BreakIterator object forward or backward by a certain number of break points.
    // If a positive number is input, move backward. If a negative number is input, move forward. If no value is input, move one position backward.
    // When the object is moved out of the text length range, -1 is returned.
    var nextPos = breakIterator.next(-2);
-   var previousPos = breakIterator.previous(); // Moves a BreakIterator object to the previous break point. When the text length is out of the range, -1 is returned.
-   // Moves a BreakIterator object to the break point following the position specified by offset. If the object is moved out of the text length range, -1 is returned.
+   var previousPos = breakIterator.previous(); // Move a BreakIterator object to the previous break point. When the text length is out of the range, -1 is returned.
+   // Move a BreakIterator object to the break point following the position specified by offset. If the object is moved out of the text length range, -1 is returned.
    var followingPos = breakIterator.following(10); 
    ```