人教版初中英语九年级英语第十单元解析.doc

人教版初中英语九年级英语第十单元解析
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 这是一个过去完成时的句子,表示在过去某一时间或某一动作之前完成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,我们已经完成了工作。
She had learned a lot of English before she went to school.
在上学之前,她已经学会了很多英语。
(2)left是leave的过去式,在此处意为“遗忘”,“忘记”,后面常有地点状语。
Li Min left his dictionary in the reading-room yesterday.
昨天李民把词典忘在阅览室里了。
特别提示
forget作“遗忘”解时,后面没有“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 e 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,窃贼立刻逃走了。
(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,汤姆自己建了一个化学实验室。
3. I started walking, but I knew I couldn’t get to school on time. (P78)我开始步行,但我知道我已经不能按时到达学校了。
(1)start to do sth和start doing sth都表示“开始做某事”,常可相互替换。
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