What does the author compare the shadow to?

What you want to ask is "What does the shadow author compare to the shadow"? To a little black dog.

The article "Shadow" appeared in the Chinese textbook of the first grade of primary school, and the full text of the article is ***2 sections. Section 1: I wrote that the shadow is always in front of me, like a little black dog. The shadow is compared to a little black dog.

Before and after the shadow, explain where the shadow appears. The use of metaphor and clever techniques not only wrote its color, but also wrote its naughty, expressing its love for shadows.