To help you with the clarity of your summary, you can use some of the following formulaic phrases:
The frame represents the main point of the article. This is where you make a reference to the author and use a reporting verb. It is usually the first sentence where you present the main idea. For example:
If you write a longer summary, it is good to remind the reader that the information comes from another source. This clarifies that you continue describing the idea that is not specifically yours and helps you avoid plagiarism.
Remember about using the transition words that correspond to the logic and presentation of the main text. For example, when the author compares and contrasts ideas, make sure you use vocabulary relating to comparing and contrasting.
Adapted from Smith (2019)
To sum up, when you are summarising…