This document discusses integrating grammar instruction into communicative language teaching using a pre-, while-, and post-stage framework. It notes problems with traditional grammar teaching such as being taught in isolation rather than integrated into skills. A sample grammar lesson on "used to" is provided as an example of this framework, with the pre-stage stimulating interest, the while-stage providing contextual examples and noticing the structure, and the post-stage applying it communicatively. The framework aims to make grammar purposeful and integrated into real-world language use.