This document is an English lesson about using "can" and "can't" to express ability. It provides examples of affirmative, negative, and interrogative sentences. Students are asked to write sentences using can/can't with given verbs. They are also asked to answer questions using can/can't and look at a picture to write sentences about what figures in it can and can't do. The lesson concludes with ordering sentences and answering questions using can/can't to express ability.