diff --git a/10-regular-expressions/01-regexp-introduction/article.md b/10-regular-expressions/01-regexp-introduction/article.md
index 3ae39fdb..7cdb55e0 100644
--- a/10-regular-expressions/01-regexp-introduction/article.md
+++ b/10-regular-expressions/01-regexp-introduction/article.md
@@ -23,7 +23,7 @@ regexp = new RegExp("pattern", "flags");
...And the short one, using slashes `"/"`:
```js
-regexp = /pattern/; // no flags флагов
+regexp = /pattern/; // no flags
regexp = /pattern/gmi; // with flags g,m and i (to be covered soon)
```
@@ -90,7 +90,7 @@ Regular expressions may have flags that affect the search.
There are only 5 of them in JavaScript:
`i`
-: With this flag the search is case-insensitive: no difference between `А` and `а` (see the example below).
+: With this flag the search is case-insensitive: no difference between `A` and `a` (see the example below).
`g`
: With this flag the search looks for all matches, without it -- only the first one (we'll see uses in the next chapter).
diff --git a/10-regular-expressions/05-regexp-character-sets-and-ranges/article.md b/10-regular-expressions/05-regexp-character-sets-and-ranges/article.md
index f01fec1e..63803c83 100644
--- a/10-regular-expressions/05-regexp-character-sets-and-ranges/article.md
+++ b/10-regular-expressions/05-regexp-character-sets-and-ranges/article.md
@@ -6,7 +6,7 @@ Several characters or character classes inside square brackets `[…]` mean to "
## Sets
-For instance, `pattern:[еао]` means any of the 3 characters: `'а'`, `'е'`, or `'о'`.
+For instance, `pattern:[eao]` means any of the 3 characters: `'a'`, `'e'`, or `'o'`.
That's calles a *set*. Sets can be used in a regexp along with regular characters:
@@ -26,8 +26,8 @@ alert( "Voila".match(/V[oi]la/) ); // null, no matches
The pattern assumes:
-- `pattern:В`,
-- then *одну* of the letters `pattern:[oi]`,
+- `pattern:V`,
+- then *one* of the letters `pattern:[oi]`,
- then `pattern:la`.
So there would be a match for `match:Vola` or `match:Vila`.
@@ -70,7 +70,7 @@ They are denoted by a caret character `^` at the start and match any character *
For instance:
-- `pattern:[^аеуо]` -- any character except `'a'`, `'e'`, `'y'` or `'o'`.
+- `pattern:[^aeyo]` -- any character except `'a'`, `'e'`, `'y'` or `'o'`.
- `pattern:[^0-9]` -- any character except a digit, the same as `\D`.
- `pattern:[^\s]` -- any non-space character, same as `\S`.
diff --git a/10-regular-expressions/08-regexp-greedy-and-lazy/article.md b/10-regular-expressions/08-regexp-greedy-and-lazy/article.md
index 25367524..f3ad4027 100644
--- a/10-regular-expressions/08-regexp-greedy-and-lazy/article.md
+++ b/10-regular-expressions/08-regexp-greedy-and-lazy/article.md
@@ -237,7 +237,7 @@ Let's modify the pattern by making the quantifier `pattern:.*?` lazy:
let str = '...... ...';
let reg = //g;
-// Сработало!
+// Works!
alert( str.match(reg) ); // ,
```
diff --git a/10-regular-expressions/11-regexp-alternation/02-find-matching-bbtags/task.md b/10-regular-expressions/11-regexp-alternation/02-find-matching-bbtags/task.md
index 964b3c40..e0919e03 100644
--- a/10-regular-expressions/11-regexp-alternation/02-find-matching-bbtags/task.md
+++ b/10-regular-expressions/11-regexp-alternation/02-find-matching-bbtags/task.md
@@ -4,7 +4,7 @@ A "bb-tag" looks like `[tag]...[/tag]`, where `tag` is one of: `b`, `url` or `qu
For instance:
```
-[b]текст[/b]
+[b]text[/b]
[url]http://google.com[/url]
```
diff --git a/5-animation/1-bezier-curve/article.md b/5-animation/1-bezier-curve/article.md
index dc37e9b8..2f234b1f 100644
--- a/5-animation/1-bezier-curve/article.md
+++ b/5-animation/1-bezier-curve/article.md
@@ -41,7 +41,7 @@ Try to move points using a mouse in the example below:
[iframe src="demo.svg?nocpath=1&p=0,0,0.5,0,0.5,1,1,1" height=370]
-**As you can notice, the curve stretches along the tangential lines 1 -> 2 и 3 -> 4.**
+**As you can notice, the curve stretches along the tangential lines 1 -> 2 and 3 -> 4.**
After some practice it becomes obvious how to place points to get the needed curve. And by connecting several curves we can get practically anything.
diff --git a/5-animation/2-css-animations/boat.view/index.html b/5-animation/2-css-animations/boat.view/index.html
index 29943365..60b70426 100644
--- a/5-animation/2-css-animations/boat.view/index.html
+++ b/5-animation/2-css-animations/boat.view/index.html
@@ -13,7 +13,7 @@
-