You are welcome to answer questions posted in the Ask a Teacher forum as long as your suggestions, help, and advice reflect a good understanding of the English language. If you are not a teacher, you will need to state that clearly at the top of your post. Please note, all posts are moderated by our in-house language experts, so make sure your suggestions, help, and advice house the kind of information an international language teacher would offer. If not, and your posts do not contribute to the topic in a positive way, they will be subject to deletion.
That sentence is an example of extraposition. That's when a phrase, which in this case happens to be a subject complement, "scared of barking", is placed at the head of the sentence for emphasis or, in this case, delayed effect.
The little boy was scared of barking. Scared of barking, the little boy was.
barking 
Linear Mode
