A Power Point which explains the role of subjects and objects in a sentence and the form of passive and active voice… A task sheet with questions about recognising subjects and objects in a sentence. An exercise for students to complete after the presentation. Answers are included. You can purchase the whole set of these Power Points (11 in total) about different grammar points or punctuation marks. It’s a resource called ‘Grammar & Punctuation Explanations’. There’s also a whole set of task sheets like the one here with each exercise corresponding to the Power Point. It’s called ‘Grammar & Punctuation Exercises’.