It's hard to find the time to incorporate grammar with the more rigorous Common Core Standards taking precedence. Bellwork is an excellent way to tackle this problem without taking too much time out of your already packed class periods.
Use this presentation as a basis for mini-lessons and discussions abut grammar (Yes, discussion actually happens!).
Each slide contains a sentence straight from a retired ACT test. A portion is underlined and students must decide which answer choice is the correct one to replace the underlined portion. Challenge them by having them write out WHY they chose that answer. "Because it looks right" is not an option. Each slide then reveals the answer through an animation and provides a detailed explanation, using the appropriate grammatical terms.
This can also be used for formative assessment. Were the students able to answer the question correctly? Did they have the correct reason why the answer was B? Guide your teaching with this easy tool.