请帮忙修改一下英语语法错误This thesis consists of three parts:the first one is the introduction,this part is mainly introduces the development and significance of the positive definite matrix.
问题描述：
请帮忙修改一下英语语法错误
This thesis consists of three parts:the first one is the
introduction,this part is mainly introduces the development and significance of
the positive definite matrix.
答
this part 后面的is 去掉，不能用 is introduces
答
This thesis consists of three parts:the first one is the introduction,this part mainly introduces the development and significance of the positive definite matrix.