diff --git a/36_MerkleTree/readme.md b/36_MerkleTree/readme.md
index 978d35e58..f01652ad1 100644
--- a/36_MerkleTree/readme.md
+++ b/36_MerkleTree/readme.md
@@ -114,7 +114,7 @@ library MerkleProof {
 
 3.  `_hashPair()`函数：用`keccak256()`函数计算非根节点对应的两个子节点的哈希（排序后）。
 
-我们将`地址0`，`root`和对应的`proof`输入到`verify()`函数，将返回`ture`。因为`地址0`在根为`root`的`Merkle Tree`中，且`proof`正确。如果改变了其中任意一个值，都将返回`false`。
+我们将`地址0`，`root`和对应的`proof`输入到`verify()`函数，将返回`true`。因为`地址0`在根为`root`的`Merkle Tree`中，且`proof`正确。如果改变了其中任意一个值，都将返回`false`。
 
 ## 利用`Merkle Tree`发放`NFT`白名单
 
diff --git a/Languages/en/03_Function_en/readme.md b/Languages/en/03_Function_en/readme.md
index e5f9401df..5f0d569c7 100644
--- a/Languages/en/03_Function_en/readme.md
+++ b/Languages/en/03_Function_en/readme.md
@@ -71,7 +71,7 @@ The following statements are considered modifying the state:
 8. Using inline assembly that contains certain opcodes.
 
 
-I drew a Mario cartton to visualize `pure` and `view`. In the picture, the state variable is represented by Princess Peach, keywards are represented by three different characters.
+I drew a Mario cartton to visualize `pure` and `view`. In the picture, the state variable is represented by Princess Peach, keywords are represented by three different characters.
 
 ![WHAT is pure and view in solidity?](https://images.mirror-media.xyz/publication-images/1B9kHsTYnDY_QURSWMmPb.png?height=1028&width=1758)
 
diff --git a/Languages/en/13_Inheritance_en/readme.md b/Languages/en/13_Inheritance_en/readme.md
index 45932ee68..0f2658e51 100644
--- a/Languages/en/13_Inheritance_en/readme.md
+++ b/Languages/en/13_Inheritance_en/readme.md
@@ -26,7 +26,7 @@ Inheritance is one of the core concepts in object-oriented programming, which ca
 
 ### Rules
 
-There are two important keywards for inheritance in Solidity:
+There are two important keywords for inheritance in Solidity:
 
 - `virtual`: If the functions in the parent contract are expected to be overridden in its child contracts, they should be declared as `virtual`.
 
diff --git a/Languages/en/21_CallContract_en/readme.md b/Languages/en/21_CallContract_en/readme.md
index b80349cf5..23702cb54 100644
--- a/Languages/en/21_CallContract_en/readme.md
+++ b/Languages/en/21_CallContract_en/readme.md
@@ -21,7 +21,7 @@ Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTFSolidit
 
 ## Interact with deployed contract
 
-Interactions between contracts not only make the programs re-usable on the blockchain, also enrich the Ethereum ecosystem. Many `web3` Dapps rely on other contract to work, for example `yield farming`. In this tutorial, we will talk about how to interact with contract that source code (or ABI) and address are available.
+Interactions between contracts not only make the programs reusable on the blockchain, also enrich the Ethereum ecosystem. Many `web3` Dapps rely on other contract to work, for example `yield farming`. In this tutorial, we will talk about how to interact with contract that source code (or ABI) and address are available.
 
 ## Target Contract
 Lets write a simple contract `OtherContract` to work with.
diff --git a/Languages/en/23_Delegatecall_en/readme.md b/Languages/en/23_Delegatecall_en/readme.md
index 35112bbd4..5fbd3b42d 100644
--- a/Languages/en/23_Delegatecall_en/readme.md
+++ b/Languages/en/23_Delegatecall_en/readme.md
@@ -74,7 +74,7 @@ contract C {
 }
 ```
 ### Call Initizalization Contract B
-First, contract `B` must have the same state variable layout as target contract `C`, 2 variabels and the order is `num` and `sender`.
+First, contract `B` must have the same state variable layout as target contract `C`, 2 variables and the order is `num` and `sender`.
 
 ```solidity
 contract B {
@@ -137,5 +137,5 @@ While function `delegatecallSetVars` calls `setVars` via `delegatecall`. Similar
 ![resultdelegatecall.png](./img/23-8.png)
 
 ## Summary
-In this lecture we introduce another low level function in `Solidity`, `delegatecall`. Similar to `call`, `delegatecall` can be used to call another contract; the difference of `delegatecall` and `call` is `execution context`, the `execution context` is `C` if `B` `call` `C`; but the `execution context` is `B` if `B` `delegatecall` `C`. The major use cases for delegatecall is `proxy contract` and `EIP-2535 Diamons`.
+In this lecture we introduce another low level function in `Solidity`, `delegatecall`. Similar to `call`, `delegatecall` can be used to call another contract; the difference of `delegatecall` and `call` is `execution context`, the `execution context` is `C` if `B` `call` `C`; but the `execution context` is `B` if `B` `delegatecall` `C`. The major use cases for delegatecall is `proxy contract` and `EIP-2535 Diamonds`.
 
diff --git a/Languages/en/24_Create_en/readme.md b/Languages/en/24_Create_en/readme.md
index afb8c0ffa..6f5f5ecc0 100644
--- a/Languages/en/24_Create_en/readme.md
+++ b/Languages/en/24_Create_en/readme.md
@@ -18,7 +18,7 @@ Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.goog
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTFSolidity](https://github.com/AmazingAng/WTFSolidity)
 -----
 
-On Ethereum, user (Externally-owned account, `EOA`) can create smart contracts, a smart contract can also create new smart contracts. The decentralized exchange `Uniswap` creates an infinite number of `Pair` contracts with its `Factory` contract. In this lecture, I will explain how to create new smart contracts in an existed smart contract by using a simplied version of `Uniswap`.
+On Ethereum, user (Externally-owned account, `EOA`) can create smart contracts, a smart contract can also create new smart contracts. The decentralized exchange `Uniswap` creates an infinite number of `Pair` contracts with its `Factory` contract. In this lecture, I will explain how to create new smart contracts in an existed smart contract by using a simplified version of `Uniswap`.
 
 ## `create` and `create2`
 There are two ways to create a new contract in an existed contract, `create` and `create2`, this lecture will introduce `create`, next lecture will introduce `create2`.
@@ -61,7 +61,7 @@ contract Pair{
 ```
 `Pair` contract is very simple, including 3 state variables: `factory`, `token0` and `token1`.
 
-The `constructor` assigns Factory contract's address to `factory` at the time of delpoyment. `initialize` function will be called once by the `Factory` contract when the `Pair` contract is created, and update `token0` and `token1` with the addresses of 2 tokens in the token pair.
+The `constructor` assigns Factory contract's address to `factory` at the time of deployment. `initialize` function will be called once by the `Factory` contract when the `Pair` contract is created, and update `token0` and `token1` with the addresses of 2 tokens in the token pair.
 
 > **Ask**: Why doesn't `Uniswap` set the addresses of `token0` and `token1` in the `constructor`?
 >
diff --git a/Languages/en/README.md b/Languages/en/README.md
index e23e24eca..497aab89c 100644
--- a/Languages/en/README.md
+++ b/Languages/en/README.md
@@ -27,7 +27,7 @@ Tutorials and codes are open-sourced on github: [github.com/AmazingAng/WTFSolidi
 
 **Chapter 5: Data Location (storage/memory/calldata)**：[Code](./05_DataStorage_en) | [Tutorial](./05_DataStorage_en/readme.md)
 
-**Chapter 6: Array and Sruct**：[Code](./06_ArrayAndStruct_en) | [Tutorial](./06_ArrayAndStruct_en/readme.md)
+**Chapter 6: Array and Struct**：[Code](./06_ArrayAndStruct_en) | [Tutorial](./06_ArrayAndStruct_en/readme.md)
 
 **Chapter 7: Mapping**：[Code](./07_Mapping_en) | [Tutorial](./07_Mapping_en/readme.md)
 
diff --git a/S01_ReentrancyAttack/readme.md b/S01_ReentrancyAttack/readme.md
index 73d9d8303..10be523d6 100644
--- a/S01_ReentrancyAttack/readme.md
+++ b/S01_ReentrancyAttack/readme.md
@@ -152,7 +152,7 @@ contract Attack {
 
 1. 部署`Bank`合约，调用`deposit()`函数，转入`20 ETH`。
 2. 切换到攻击者钱包，部署`Attack`合约。
-3. 调用`Atack`合约的`attack()`函数发动攻击，调用时需转账`1 ETH`。
+3. 调用`Attack`合约的`attack()`函数发动攻击，调用时需转账`1 ETH`。
 4. 调用`Bank`合约的`getBalance()`函数，发现余额已被提空。
 5. 调用`Attack`合约的`getBalance()`函数，可以看到余额变为`21 ETH`，重入攻击成功。
 
diff --git a/S02_SelectorClash/readme.md b/S02_SelectorClash/readme.md
index 3baf05440..0f0c74f76 100644
--- a/S02_SelectorClash/readme.md
+++ b/S02_SelectorClash/readme.md
@@ -88,7 +88,7 @@ Poly Network黑客事件中，黑客碰撞出的`_method`为 `f1121318093`，即
 
 1. 部署`SelectorClash`合约。
 2. 调用`executeCrossChainTx()`，参数填`0x6631313231333138303933`，`0x`，`0x`，`0`，发起攻击。
-3. 查看`solved`变量的值，被修改为`ture`，攻击成功。
+3. 查看`solved`变量的值，被修改为`true`，攻击成功。
 
 ## 总结