Unit 4Dont eat in class.Section A (1a-1c) 任务一:英汉短语连线搭配。1.arrive late for class A.听音乐2.run in the hallwaysB.在走廊里跑3.on timeC.在餐厅里4.in the dining hallD.准时5.listen to musicE.上课迟到答案:1.E2.B3.D4.C5.A任务二:选择正确的单词或词组填空。1.(Can/Does) Can you eat in class?2.(Dont/Has to) Dont run in the hallways.3.Students (cant/doesnt) cant arrive late for school.4.Does Peter (have to/can) have to go to bed now?5.(Does/Can) Can you listen to music in class?121.Dont arrive late for class.上课不要迟到。剖析(1)本句是祈使句的否定句,其结构为:Dont+动词原形。如:Dont look out of the window.不要向窗外看。(2)arrive late for意为“迟到”,相当于be late for。如:Mike often arrives late for class.= Mike is often late for class.迈克上课经常迟到。122.We must be on time. 我们必须守时。剖析(1)must是情态动词, 表示“必须; 务必”, 后接动词原形。如: You must tell me something about it. 你必须告诉我这件事情。(2)on time是固定短语, 意为“准时; 按时”。如: Its important for the students to be on time for school. 对学生来说按时到校很重要。辨析on time与in time12如:Please be here on time tomorrow.请明天准时来这儿。Can you arrive in time to attend the meeting?你能及时赶来参加这个会议吗?