• if +从句（一般过去时），主句（would do）
错综时间下的用法：过去条件+现实情况
If he had taken the doctor’s advice, he should not be ill now.要是当初听了医生的 话，他现在就不会生病了。
If the doctor hadn’t come in time, the patient would be dead by now. 大夫及时 到了，病人得救了。
1.Big Ben was built _____
A.for the B.B.C.
B.after a fire
C.In honour of Sir Benjamin Hall
D.long before 1834
2.Accuracy is maintained ______
A.By microphones in the clock tower
• 名称由来
• 大本钟得名于它在1859年修建时的建造者 本杰明爵士(Benjamin Hall)，故名“大本”。
One can’t put back the clock. 时钟不能倒转。
parliament
parliament n.议会，国会
the Houses of Parliament 国会大厦
B.By workmen
C.Because the clock is at Greenwich Observatory
D.By officials who check the clock frequently
• Which radio station can it be heard on ?
• What happened to the Houses of Parliament in 1843?
• She is my child, and I am responsible for her.
她是我的孩子,我对她负责。
• the making of the clock = making the clock
• when 引导的时间状语从句
4、It is not only of immense size, but is extremely accurate as well.
If I had known the plan ,I would have given it more careful thought.
Had I known the plan ,I would have given it more careful thought.
Wish句
I wish that I were as tall as Yao Ming.
• not only… but … as well 不但……而 且
• be +of +n. 用来表示人或物的特征。
• We are of the same age .
• This letter is of great importance .
• extremely accurate 极其精确 （副词修饰形容词） quite sure 十分确信
• How big is the clock ?
• official n. 官员，高级官员 • official from sw. 来自……的官员
• officials from Greenwich Observatory
• 来自于格林尼治天文台的官员们 • have sth. done 使……被……
tower n. 塔
1 、 When you visit London, one of the first things you will see is Big Ben, the famous clock which can be heard all over the world on the B.B.C.
• 大本钟简介
• 英国伦敦著名古钟或称大本钟(Big Ben)， 是伦敦的传统地标。
• 大本钟从1859年就为伦敦城报时，根据格 林尼治时间每隔一小时敲响一次，至今将近一个 半世纪，尽管这期间大本钟曾两度裂开而重铸。 现在大本钟的钟声仍然清晰、动听。自从1859 年投入使用后，英国政府每隔五年就要对大本钟 实施维护，包括清洗钟体、替换大本钟的报时轮 系和运转轮系等。
• Big Ben 和the famous clock 同位语 • which can be heard 定语从句 • can be heard 情态动词的被动语态
• all over the world
• on the B.B.C (British Broadcasting Corporation)
5、 On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the clock tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time.
4.The ______ who served me was very helpful.
hang---hanged---hanged
v.绞死，吊死，上吊
hang---hung---hung
v.悬挂
I’m hanging this picture on the wall. I wonder why she hanged herself.
• He has just checked in at the hotel. 他刚刚在旅馆办好住宿手续。
• check out 检查出来
v. 检查 Check up all the windows before you leave the office. n. 检查 You should have a health check every year. Have you passed the security check? n. 支票 Could you hand me the checkbook please?
“if”的省略
条件句中的if在下列情况中可省略：
If +主+had / were / should
Had / were / should +主
If I were in your place , I wouldn’t date him. Were I in your place , I wouldn’t date him.
• when 引导的时间状语从句。
• visit sw. visit Shanghai
• one of +名词复数 （前面可以用序数词，最高级 等修饰） one of the most famous singer
• you will see 是定语从句 ，作things 的定语。省 略了that，只能用that.
• take its name from 以……命名
– The Hubble telescope takes its name from Hubble .
• Sir Benjamin Hall sir+人的全名 表示……爵士。
• Sir Walter Scott
• who引导的定语从句 • be responsible for 为……负责
2 、 If the Houses of Parliament had not been burned down in 1834, the great clock would never have been erected.
If 引导的非真实条件句
对过去事情的虚拟： if +从句（过去完成时）， 主句(would have done）
• The police observed a man enter the bank.
• 警察注意到一个男人走进了银行 • to make a remark 说话；评论
• He observed that it was a lovely day.
check n/v. 检查 n.支票
• check in 登记
salesclerk (美)
1.The Customs _____ official asked me several questions.
2.Over a thousand factory _e_m_plo_ye_es_ went on strike.
3.She works as a ______in shop assistant a clothing store.
• give the correct time 给予正确的时间
go wrong（机器等）发生故障/出毛病
My watch/the engine of the car has gone wrong.
Something has gone wrong with my car.
6 、 A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down!
• strike v. 敲钟，打，打击（struck ,struck)
• connect … to …
• the clock tower 钟塔
• rarely adv. 几乎不 • go wrong （with sth.) 出错，出故障
• fail to do sth. 没有做某事，未履行做某事， 失败做某事
I wish I had told you the truth the other day.