老师通过非语言的方式，比如点头和微笑，来鼓励学生。

The teacher used ___nonverbal methods, such as nodding and smiling, to encourage the students.

这个自闭症男孩没有语言能力，但他会用图片表达需求。

The autistic boy is ___nonverbal, but he uses pictures to express his needs.