Fixed some wording

docs/guide/upgrade-from-v1.md

@@ -13,7 +13,7 @@ The most obvious change in Yii 2.0 is the use of namespaces. Almost every core c
 is namespaced, e.g., `yii\web\Request`. The "C" prefix is no longer used in class names.
 The naming of the namespaces follows the directory structure. For example, `yii\web\Request`
 indicates the corresponding class file is `web/Request.php` under the Yii framework folder.
-You can use any core class without explicitly include that class file, thanks to the Yii
+You can use any core class without explicitly including that class file, thanks to the Yii
 class loader.
 
 
@@ -117,17 +117,17 @@ supported in most places in the Yii core code. For example, `FileCache::cachePat
 both a path alias and a normal directory path.
 
 Path alias is also closely related with class namespaces. It is recommended that a path
-alias defined for each root namespace so that you can use Yii class autoloader without
+alias be defined for each root namespace so that you can use Yii the class autoloader without
 any further configuration. For example, because `@yii` refers to the Yii installation directory,
 a class like `yii\web\Request` can be autoloaded by Yii. If you use a third party library
-such as Zend Framework, you may define a path alias `@Zend` which refers to its installation directory.
-And Yii will be able to autoload any class in this library.
+such as Zend Framework, you may define a path alias `@Zend` which refers to its installation 
+directory and Yii will be able to autoload any class in this library.
 
 
 View
 ----
 
-Yii 2.0 introduces a `View` class to represent the view part in the MVC pattern.
+Yii 2.0 introduces a `View` class to represent the view part of the MVC pattern.
 It can be configured globally through the "view" application component. It is also
 accessible in any view file via `$this`. This is one of the biggest changes compared to 1.1:
 **`$this` in a view file no longer refers to the controller or widget object.**
@@ -159,7 +159,7 @@ extension for your Smarty views, or `twig` for Twig views. You may also configur
 Models
 ------
 
-A model is now associated with a form name returned its `formName()` method. This is
+A model is now associated with a form name returned by its `formName()` method. This is
 mainly used when using HTML forms to collect user inputs for a model. Previously in 1.1,
 this is usually hardcoded as the class name of the model.
 
@@ -235,7 +235,7 @@ Previously in 1.1, you would have to enter the widget class names as strings via
 Themes
 ------
 
-Theme works completely different in 2.0. It is now based on a path map to "translate" a source
+Themes work completely different in 2.0. They are now based on a path map to "translate" a source
 view into a themed view. For example, if the path map for a theme is
 `array('/www/views' => '/www/themes/basic')`, then the themed version for a view file
 `/www/views/site/index.php` will be `/www/themes/basic/site/index.php`.
@@ -250,7 +250,7 @@ application component.
 Console Applications
 --------------------
 
-Console applications are now composed by controllers, too, like Web applications. In fact,
+Console applications are now composed by controllers, like Web applications. In fact,
 console controllers and Web controllers share the same base controller class.
 
 Each console controller is like `CConsoleCommand` in 1.1. It consists of one or several
@@ -300,7 +300,7 @@ public function behaviors()
 Assets
 ------
 
-Yii 2.0 introduces a new concept called *asset bundle*. It is a bit similar to script
+Yii 2.0 introduces a new concept called *asset bundle*. It is similar to script
 packages (managed by `CClientScript`) in 1.1, but with better support.
 
 An asset bundle is a collection of asset files (e.g. JavaScript files, CSS files, image files, etc.)
@@ -315,7 +315,7 @@ Static Helpers
 
 Yii 2.0 introduces many commonly used static helper classes, such as `Html`, `ArrayHelper`,
 `StringHelper`. These classes are designed to be easily extended. Note that static classes
-are usually hard to be extended because of the fixed class name references. But Yii 2.0
+are usually hard to extend because of the fixed class name references. But Yii 2.0
 introduces the class map (via `Yii::$classMap`) to overcome this difficulty.
 
 
@@ -343,7 +343,7 @@ Query Builder
 
 In 1.1, query building is scattered among several classes, including `CDbCommand`,
 `CDbCriteria`, and `CDbCommandBuilder`. Yii 2.0 uses `Query` to represent a DB query
-and `QueryBuilder` to generate SQL statements from query objects. For example,
+and `QueryBuilder` to generate SQL statements from query objects. For example:
 
 ```php
 $query = new \yii\db\Query;
@@ -365,7 +365,7 @@ ActiveRecord
 ------------
 
 ActiveRecord has undergone significant changes in Yii 2.0. The most important one
-is about relational ActiveRecord query. In 1.1, you have to declare the relations
+is the relational ActiveRecord query. In 1.1, you have to declare the relations
 in the `relations()` method. In 2.0, this is done via getter methods that return
 an `ActiveQuery` object. For example, the following method declares an "orders" relation:
 
@@ -392,7 +392,7 @@ by filtering with the primary keys of the primary records.
 
 
 Yii 2.0 no longer uses the `model()` method when performing queries. Instead, you
-use the `find()` method like the following:
+use the `find()` method:
 
 ```php
 // to retrieve all *active* customers and order them by their ID:
@@ -410,14 +410,14 @@ Therefore, you can use all query methods of `Query`.
 
 Instead of returning ActiveRecord objects, you may call `ActiveQuery::asArray()` to
 return results in terms of arrays. This is more efficient and is especially useful
-when you need to return large number of records. For example,
+when you need to return a large number of records:
 
 ```php
 $customers = Customer::find()->asArray()->all();
 ```
 
 By default, ActiveRecord now only saves dirty attributes. In 1.1, all attributes
-would be saved to database when you call `save()`, regardless they are changed or not,
+are saved to database when you call `save()`, regardless of having changed or not,
 unless you explicitly list the attributes to save.
 
 
@@ -427,7 +427,7 @@ Auto-quoting Table and Column Names
 Yii 2.0 supports automatic quoting of database table and column names. A name enclosed
 within double curly brackets is treated as a table name, and a name enclosed within
 double square brackets is treated as a column name. They will be quoted according to
-the database driver being used. For example,
+the database driver being used:
 
 ```php
 $command = $connection->createCommand('SELECT [[id]] FROM {{posts}}');