I have helped many students who find English challenging. We look at what homework they have for English and then work together to understand what is being asked and to work out the answers.
We work together on how to summarize notes in preparation for exams. Talking about different subjects expands vocabulary. Reading different texts improves vocabulary, comprehension and grammar.
Writing texts helps to use English creatively, choosing different adjectives to make it interesting.
Poetry can seem confusing but analysing it line by line often clarifies meaning and exposes hidden ideas.
Advertisements, political speeches, letters etc. prove how persuasive language can be.