Academic English Online:

An interactive range of learning resources to assist students in the development of their academic English skills.

https://aeo.sllf.qmul.ac.uk/

Academic Writing Resources

A comprehensive outline of the key aspects, features and processes of academic writing.

https://twp.duke.edu/twp-writing-studio/resources-students

Using English for Academic Purposes: 

An informative and interactive guide for university students in the use of academic English.

https://www.uefap.org/

Academic Phrasebank: 

A general guide and resource for academic writers and researchers.

https://www.phrasebank.manchester.ac.uk/