we should bear in mind that use the net properly is important.这句话有没有什么错误?

it's necessary to use the net but to control yourself in properly

use 改为 using

有
use the net properly 是个动宾结构,后面不能接is ……
建议：We should bear in mind that it is important to use the net properly

有错误，use是动词，不能做that从句的主语，应使用动名词形式using。