Take a paragraph, any paragraph, but make sure it's at your students' level.
- collocations (phrases that go together),
- phrasal verbs,
- prepositional phrases
- kinds of phrases that form grammatical units.
- subject verb agreement,
- active/passive sentences,
- sentence types (e.g., simplex, complex, ect.).
Go to an online grammar site
- find the typical errors that learners of English make.
- Find examples of the correct forms in the paragraph you've chosen.
Now go through the paragraph and chose the forms you want to cover with your students. Make sure you don't overwhelm them with too much or pick to many things that are unrelated. Choose 2 or 3 points:
- semantics (synonyms, antonyms)
- syntax (word order; e.g. adjectives)
- connectors (e.g., subordinating conjunctions)
You can do this with any paragraph. All you need to do is to be able to spot the constructs you want your students to learn.