Signal phrases are important in writing to distinguish between your ideas and those of other authors, integrating source material smoothly.
Signal phrases are used in writing to differentiate between your own thoughts and those of the authors you are quoting, paraphrasing, or summarizing. They help integrate source material into documents cohesively and let readers know where the summarized material begins. Signal phrases require the use of the author's name and a strong verb to properly document quoted, paraphrased, and summarized material.
https://brainly.com/question/38449099