Merge pull request #1322 from Dayun123/Dayun123-javascript.info--ch.4-grammar-patch

Dayun123 javascript.info  ch.4 grammar patch

Author: iliakan

1-js/04-object-basics/04-object-methods/article.md

@@ -167,9 +167,9 @@ If we used `this.name` instead of `user.name` inside the `alert`, then the code
 
 ## "this" is not bound
 
-In JavaScript, "this" keyword behaves unlike most other programming languages. It can be used in any function.
+In JavaScript, the "this" keyword behaves unlike most other programming languages. It can be used in any function.
 
-There's no syntax error in the code like that:
+There's no syntax error in the following example:
 
 ```js
 function sayHi() {
@@ -226,7 +226,7 @@ Usually such call is a programming error. If there's `this` inside a function, i
 ```smart header="The consequences of unbound `this`"
 If you come from another programming language, then you are probably used to the idea of a "bound `this`", where methods defined in an object always have `this` referencing that object.
 
-In JavaScript `this` is "free", its value is evaluated at call-time and does not depend on where the method was declared, but rather on what's the object "before the dot".
+In JavaScript `this` is "free", its value is evaluated at call-time and does not depend on where the method was declared, but rather on what object is "before the dot".
 
 The concept of run-time evaluated `this` has both pluses and minuses. On the one hand, a function can be reused for different objects. On the other hand, greater flexibility opens a place for mistakes.