英语是全球性语言我们一定要学 从句咋说

其实不是每一句都是要用从句的,这样反而会变得不native.
但是既然你问了.
那下面有几个例句：
1.English is a worldwide language that it's necessary for us to learn it.
2.we must learn how to speak English which is the global language.
3.Since we can speak English everywhere,we must learn it.
i hope it will help you a little bit

主干是个主系表结构，that是一个定语从句，其中，english是主语，系动词是is，表语是a global language ， that引导的定语修饰language。
希望能帮到你！