To do the grammar tense analysis, you can use spaCy or another syntactic parser. The parse tree won't directly give you the exact grammar tense, you will need t

To do the grammar tense analysis, you can use spaCy or another syntactic parser. The parse tree won't directly give you the exact grammar tense, you will need to do some simple analysis of the conjugational form of the root verb, and the auxiliary verbs that are attached to it. I've done extensive work in this area, including developing my own statistical parser from scratch. I'd be happy to chat more about this project, my email is daniel dot burfoot at gmail.com.