1. Corpus of Contemporary American English
链接：https://www.english-corpora.org/coca/
2. Purdue Online Writing Lab
链接：https://owl.purdue.edu/owl/
3. Academic Phrases and Vocabulary
链接：https://www.ref-n-write.com/blog/category/academic-phrases-vocabulary/
4. 100+ Strong Verbs That Will Make Your Research Writing Amazing
链接：https://blog.wordvice.com/recommended-verbs-for-research-writing/
5.Academic Phasebank
链接：https://nnkt.ueh.edu.vn/wp-content/uploads/2019/06/Academiv-Phrase-Bank.pdf
6. Research Writing: Starter Phrases
链接：
https://emedia.rmit.edu.au/learninglab/sites/default/files/Research_Starter_phrases_2014_Accessible.pdf
