Use words if necessary.

如有必要，再去用语言。

youdao

I encourage the use of a book to help facilitate conversation and focus on covering important grammar and words, but a book may not be necessary if the student would rather just talk.

我们也可以不用课本，但是我还觉得用课本也有好处，可以帮我们集中学习语法特点或者给我门话题看图片。

youdao