diff --git a/en/src/type-conversions/as.md b/en/src/type-conversions/as.md
index deb8d58..4b27fe3 100644
--- a/en/src/type-conversions/as.md
+++ b/en/src/type-conversions/as.md
@@ -15,7 +15,7 @@ fn main() {
 
     assert_eq!(integer, 'b' as u8);
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
@@ -23,17 +23,17 @@ fn main() {
 ```rust,editable
 fn main() {
     assert_eq!(u8::MAX, 255);
-    // the max of `u8` is 255 as shown above.
+    // The max of `u8` is 255 as shown above.
     // so the below code will cause an overflow error: literal out of range for `u8`.
     // PLEASE looking for clues within compile errors to FIX it.
     // DON'T modify any code in main.
     let v = 1000 as u8;
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
-3. 🌟🌟  when casting any value to an unsigned type `T`, `T::MAX + 1` is added or subtracted until the value fits into the new type.
+3. 🌟🌟  When casting any value to an unsigned type `T`, `T::MAX + 1` is added or subtracted until the value fits into the new type.
 ```rust,editable
 fn main() {
     assert_eq!(1000 as u16, __);
@@ -67,7 +67,7 @@ fn main() {
 }
 ```
 
-4. 🌟🌟🌟 Raw pointer can be converted to memory address (integer) and vice versa
+4. 🌟🌟🌟 Raw pointers can be converted to memory address (integer) and vice versa.
 ```rust,editable
 
 // FILL in the blanks
@@ -78,13 +78,13 @@ fn main() {
     let second_address = first_address + 4; // 4 == std::mem::size_of::<i32>()
     let p2: *mut i32 = second_address __; // p2 points to the 2nd element in values
     unsafe {
-        // add one to the second element
+        // Add one to the second element
         __
     }
     
     assert_eq!(values[1], 3);
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
@@ -100,6 +100,6 @@ fn main() {
         assert_eq!(std::mem::size_of_val(&*b), __)
     }
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
diff --git a/en/src/type-conversions/from-into.md b/en/src/type-conversions/from-into.md
index 72cb63c..a6cefa9 100644
--- a/en/src/type-conversions/from-into.md
+++ b/en/src/type-conversions/from-into.md
@@ -8,7 +8,7 @@ The `Into` trait is simply the reciprocal of the `From` trait. That is, if you h
 
 Using the `Into` trait will typically require the type annotations as the compiler is unable to determine this most of the time.
 
-For example we can easily convert `&str` into `String` :
+For example, we can easily convert `&str` into `String` :
 ```rust
 fn main() {
     let my_str = "hello";
@@ -16,12 +16,12 @@ fn main() {
     // three conversions below all depends on the fact: String implements From<&str>:
     let string1 = String::from(my_str);
     let string2 = my_str.to_string();
-    // explict type annotation is required here
+    // Explicit type annotation is required here
     let string3: String = my_str.into();
 }
 ```
 
-because the standard library has already implemented this for us : `impl From<&'_ str> for String` .
+Because the standard library has already implemented this for us : `impl From<&'_ str> for String` .
 
 Some implementations of `From` trait can be found [here](https://doc.rust-lang.org/stable/std/convert/trait.From.html#implementors).
 
@@ -43,7 +43,7 @@ fn main() {
     // FIX the error in two ways
     let s: String = 'a' as String;
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
@@ -71,7 +71,7 @@ fn main() {
     let num: Number = __;
     assert_eq!(num.value, 30);
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
@@ -104,7 +104,7 @@ fn open_and_parse_file(file_name: &str) -> Result<i32, CliError> {
 }
 
 fn main() {
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
@@ -134,7 +134,7 @@ fn main() {
 
     assert_eq!(n, __);
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
@@ -166,6 +166,6 @@ fn main() {
     let result: Result<EvenNum, ()> = 5i32.try_into();
     assert_eq!(result, __);
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
\ No newline at end of file
diff --git a/en/src/type-conversions/others.md b/en/src/type-conversions/others.md
index 36b5d31..680e0b4 100644
--- a/en/src/type-conversions/others.md
+++ b/en/src/type-conversions/others.md
@@ -1,7 +1,7 @@
 # Others
 
 ### Convert any type to String
-To convert any type to `String`, you can simply the `ToString` trait for that type. Rather than doing that directly, you should implement the `fmt::Display` trait which will automatically provides `ToString` and also allows you to print the type with `println!`.
+To convert any type to `String`, you can simply use the `ToString` trait for that type. Rather than doing that directly, you should implement the `fmt::Display` trait which will automatically provides `ToString` and also allows you to print the type with `println!`.
 
 1. 🌟🌟
 ```rust,editable
@@ -22,14 +22,14 @@ fn main() {
     assert_eq!(origin.__, "The point is (0, 0)");
     assert_eq!(format!(__), "The point is (0, 0)");
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
 ### Parse a String
-2. 🌟🌟🌟 We can use `parse` method to convert a `String` into a `i32` number, this is becuase `FromStr` is implemented for `i32` type in standard library: `impl FromStr for i32`
+2. 🌟🌟🌟 We can use `parse` method to convert a `String` into a `i32` number, this is because `FromStr` is implemented for `i32` type in standard library: `impl FromStr for i32`
 ```rust,editable
-// To use `from_str` method, you needs to introduce this trait into the current scope.
+// To use `from_str` method, you need to introduce this trait into the current scope.
 use std::str::FromStr;
 fn main() {
     let parsed: i32 = "5".__.unwrap();
@@ -38,7 +38,7 @@ fn main() {
     let sum = parsed + turbo_parsed + from_str;
     assert_eq!(sum, 35);
 
-    println!("Success!")
+    println!("Success!");
 }
 ``` 
 
@@ -74,14 +74,14 @@ fn main() {
     let p = __;
     assert_eq!(p.unwrap(), Point{ x: 3, y: 4} );
 
-    println!("Success!")
+    println!("Success!");
 }
 ```
 
 ### Deref
 You can find all the examples and exercises of the `Deref` trait [here](https://practice.rs/smart-pointers/deref.html).
 
-### transmute
+### Transmute
 `std::mem::transmute` is a **unsafe function** can be used to reinterprets the bits of a value of one type as another type. Both of the original and the result types must have the same size and neither of them can be invalid.
 
 `transmute` is semantically equivalent to a bitwise move of one type into another. It copies the bits from the source value into the destination value, then forgets the original, seems equivalent to C's `memcpy` under the hood.
@@ -126,9 +126,9 @@ fn main() {
 
     let num = unsafe { std::mem::transmute::<[u8; 4], u32>(raw_bytes) };
 
-    // use `u32::from_ne_bytes` instead
+    // Use `u32::from_ne_bytes` instead
     let num = u32::from_ne_bytes(raw_bytes);
-    // or use `u32::from_le_bytes` or `u32::from_be_bytes` to specify the endianness
+    // Or use `u32::from_le_bytes` or `u32::from_be_bytes` to specify the endianness
     let num = u32::from_le_bytes(raw_bytes);
     assert_eq!(num, 0x12345678);
     let num = u32::from_be_bytes(raw_bytes);
@@ -150,7 +150,7 @@ fn main() {
     let val_casts = unsafe { &mut *(ptr as *mut i32 as *mut u32) };
 
     /*Turning an &str into a &[u8]: */
-    // this is not a good way to do this.
+    // This is not a good way to do this.
     let slice = unsafe { std::mem::transmute::<&str, &[u8]>("Rust") };
     assert_eq!(slice, &[82, 117, 115, 116]);