If you're having trouble expressing your ideas clearly, the Academic Phrasebank can be extremely helpful. This information is retrieved from The University of Manchester.
The academic phrasebank is organized according to the main sections of a research paper. The sections and the detail provided can be used simply to assist you in thinking about the content and organization of your own writing, while the skeleton phrases can easily be incorporated into your writing where appropriate.
This website provides an extensive list of skeleton phrases that you can use in writing your methods, results, findings, or conclusions or if you want to refer to sources you have used. See both the menu at the top of the page, as the one on the left.