Merge pull request #795 from weswhite/master

added us so the sentence makes sense

Author: iliakan

2-ui/1-document/02-dom-nodes/article.md

@@ -176,7 +176,7 @@ drawHtmlTree(node6, 'div.domtree', 690, 500);
 
 Here we see a new tree node type -- *comment node*, labeled as `#comment`.
 
-We may think -- why a comment is added to the DOM? It doesn't affect the visual representation in any way. But there's a rule -- if something's in HTML, then it also must be in the DOM tree.
+We may think -- why is a comment added to the DOM? It doesn't affect the visual representation in any way. But there's a rule -- if something's in HTML, then it also must be in the DOM tree.
 
 **Everything in HTML, even comments, becomes a part of the DOM.**
 

2-ui/1-document/03-dom-navigation/article.md

@@ -7,11 +7,11 @@ libs:
 
 # Walking the DOM
 
-The DOM allows to do anything with elements and their contents, but first we need to reach the corresponding DOM object, get it into a variable, and then we are able to modify it.
+The DOM allows us to do anything with elements and their contents, but first we need to reach the corresponding DOM object, get it into a variable, and then we are able to modify it.
 
 All operations on the DOM start with the `document` object. From it we can access any node.
 
-Here's a picture of links that allow to travel between DOM nodes:
+Here's a picture of links that allow for travel between DOM nodes:
 
 ![](dom-links.png)
 
@@ -155,9 +155,9 @@ The first thing is nice. The second is tolerable, because we can use `Array.from
 ```warn header="DOM collections are read-only"
 DOM collections, and even more -- *all* navigation properties listed in this chapter are read-only.
 
-We can't replace a child by something else assigning `childNodes[i] = ...`.
+We can't replace a child by something else by assigning `childNodes[i] = ...`.
 
-Changing DOM needs other methods, we'll see them in the next chapter.
+Changing DOM needs other methods. We will see them in the next chapter.
 ```
 
 ```warn header="DOM collections are live"
@@ -309,7 +309,7 @@ An example of usage:
 
 The specification: [tabular data](https://html.spec.whatwg.org/multipage/tables.html).
 
-There are also additional navigation properties for HTML forms. We'll look at them later when start working with forms.
+There are also additional navigation properties for HTML forms. We'll look at them later when we start working with forms.
 
 # Summary