What is a sentence? Sentence form and type

This resource is mainly for English Second Language Learners but could be adapted for other students as well. It is a multi-lesson pack that contains 35 ppts and 3 handouts that can be set as classwork or homework. The ppts are designed for lessons dealing with sentence form (subject+verb+object etc.) as well as sentence types (simple, compound, complex and compound complex). A number of the ppts are also set up for group activities (e.g. can the students define a complex sentence or give an example?). These ppts began as a simple lesson to look at sentence form but quickly morphed into sentence types and sentences by purpose (declarative, interrogative, etc.) 3 types of conditional sentences are also identified and explained.
I would divide the content over 2 periods of the teaching year: early in the semester, and then later if the students have a satisfactory grasp of how to use sentences reasonably properly. I think the first part could be used for students 11+ and the second part (sentences by purpose) for students 16+. My students found some parts very testing as it was challenging some incorrect assumptions of producing higher level sentences. I do believe that they found it rewarding and a number began to show an improvement in their overall writing.
There are 3 sets of exercises (Q &A) tied to the content while many of the ppt’s are interactive i.e. designed in such a way as to set questions and hopefully generate responses from the students. I think this is a acceptable set of teaching materials, and I have received very strong positive responses from teaching colleagues who have seen and used these materials.