请问下面的内容摘自一本原版语法书，我对其中的 the property in question 不理解：1. The
“semi-auxiliaries,” including be going to, ought to, have to, and used to, are
not prototypical in that they do not have all of these properties. 2. Expressions in
which the verb phrase...
If you are a loner, you'd better get yourself
some friends, or else risk losing precious brain cells. 麻烦老师，请老师帮我分析下句子成分，尤其是or else后面接的动词原型risk doing sth.在句子中做什么成分。谢谢！