docs(guide): polish the grammar
diff --git a/doc/Introduction.md b/doc/Introduction.md
index ecc6bff..f3bc81b 100644
--- a/doc/Introduction.md
+++ b/doc/Introduction.md
@@ -1,7 +1,7 @@
 ## Prerequisites
 
 ### Install `librocketmq`
-because the project top on [rocketmq-client-cpp](https://github.com/apache/rocketmq-client-cpp), so you need install 
+rocketmq-client-go is a lightweight wrapper around [rocketmq-client-cpp](https://github.com/apache/rocketmq-client-cpp), so you need install 
 `librocketmq` first.
 
 #### include file
@@ -17,7 +17,7 @@
 your could download directly or build manually:
 
 - download specific release: [rocketmq-client-cpp-1.2.0](http://opensource-rocketmq-client-us.oss-us-west-1.aliyuncs.com/cpp-client/libindex.log)
- and move files downloaded to your `LDFLAGS` directory(if you don't know what is `LDFLAGS`, just google it), in linux, `/usr/local/lib/` works finely.
+ and move downloaded files to your `LDFLAGS` directory(if you don't know what is `LDFLAGS`, just google it). In linux, `/usr/local/lib/` works finely.
  
 - build from source: [Build and Install](https://github.com/apache/rocketmq-client-cpp/tree/master#build-and-install)
 
@@ -187,4 +187,4 @@
 	    fmt.Printf("total message:%d, per message time:%d\n", total, timePerMessage)
     }
     ```
-- [Full example](../examples)
\ No newline at end of file
+- [Full example](../examples)