新目的英语 9 年级 unit10 重点、难点、考点及疑点注释Unit 10 By the time I got outside,the bus had already left.重点、难点、考点及疑点注释1. When I got to school, I realized I had left my backpack at home. (P76)我到学校时才发现把书包落在家了。(1)had left my backpack at home 这是一种过去完毕时的句子，表达在过去某一时间或某一动作之前完毕的动作或存在的状态。By three o’clock yesterday afternoon we had finished the work.到昨天下午三点，我们已经完毕了工作。She had learned a lot of English before she went to school. 在上学之前，她已经学会了诸多英语。(2)left 是 leave 的过去式，在此处意为“遗忘”，“忘记”，背面常有地点状语。Li Min left his dictionary in the reading-room yesterday. 昨天李民把词典忘在阅览室里了。尤其提醒forget 作“遗忘”解时，背面没有“遗忘”的地点。I have forgotten the book. 我忘记拿书了。2. My alarm clock didn’t go off, and by the time I woke up, my father had already gone into the bathroom and I had to wait for him to come out. (P78)我的闹钟坏了，因此等我醒来的时候，我父亲已经进去洗澡了，我只好等他出来。(1)go off 是“（闹钟）闹响”的意思，即“发出声音”。The thieves ran away when the burglar alarm went off. 防盗警报器一响，窃贼立即逃走了。(2)by the time I woke up 中的 by the time 意为“到……的时候”。By the time he was ten, Tom built a chemistry lab himself. 等到了十岁的时候，汤姆自己建了一种化学试验室。3. I started walking, but I knew I couldn’t get to school on time. (P78)我开始步行，但我懂得我已经不能准时抵达学校了。(1)start to do sth 和 start doing sth 都表达“开始做某事”，常可互相替代。At the age of 12, he started writing his own newspaper.= At the age of 12, he started to write his own newspaper.他十二岁时，开始编写自己的报纸。(2)on time 在本句中意为“准时，按规定的时间不早也不迟”。Li Ming’s father seldom goes work on time. 李明的父亲很少准时上班。The...
