Unit 10 By the time I got outside, the bus had already left.
I. Teaching aims and teaching demands: (1) Knowledge Objects: In this unit , students should learn to narrate past events. They would like to share the jokes they played on someone or jokes they played on them. And they also would love to read and listen to some funny stories happened on April Fool’s Day. (2) Ability Objects: To encourage the students to use the Past Perfect Tense and to train the students’ listening , speaking and writing skills using the targe