北师大版（2019）必修第一册 Unit1 Life Choices Lesson1_长难句型精析学案（含答案）

Unit1 Lesson1 长难句型精析
1. do you think 作插入语
教材原文
What kind of lifestyles do you think the men in the pictures have 你认为图画中的这些人拥有何种生活方式
经典例句
①He was after all a child, you know.
你知道他毕竟还是个孩子。
②Who do you think can answer the question
你认为谁能回答这个问题
③How much do you guess the pen is
你猜这支钢笔多少钱
④It was fortunate, he thought, that the train had stopped.
他想幸好火车停了。
⑤What are some other scientific achievements that you suppose are important
你认为其他重要的科学成就还有哪些 （that引导定语从句，修饰先行词achievements, that在从句中作主语）
即时训练1
I. 完成句子
1. 你认为他们正在谈论什么呢
What do you suppose
2. 你猜他们什么时候从公司回来？
they will come back from the company
Ⅱ. 翻译句子
1. 你认为谁帮我交了作业
2. 你认为他会怎样处理这些奖金
3. 你知道他住哪里吗
4. 我想你应该向她道歉。
答案：
I. 1. they are talking about 2. When do you guess
Ⅱ. 1. Who do you think helped me hand in my homework
2. What do you think he will do with the prize money
3. Where do you know he lives
4. You should, I think, apologize to her.
2. while表示“转折”
教材原文
I always take my portable TV and I sit on the stone wall while the dog walks round in a circle. 我总是随身携带着手提电视，坐在石墙上，小狗则在旁边绕圈。
经典例句
①While the discussion was still going on, George came in.
当讨论还在进行时，乔治进来了。
②While he loves his students, he is very strict with them.
虽然他爱他的学生，可是他对他们很严格。
③While listening to the radio, she fell asleep.
她在听收音机时睡着了。
④While in London, he studied music and painting.
在伦敦时，他学习音乐和绘画。（While后省略了主语和be动词）
易混辨析
①注意：while、when、as表“当……的时候”的区别。
while强调同时性或某时间段内一种情况发生时另一种情况出现，与延续性动词连用；when 可与延续性或非延续性动词连用，强调“这时”之意；as强调同时性，指一件事情发生，另一件事情立刻发生。
②注意：while与but的区别。
二者都有“而，然而”之意，但while强调二者的对比，而but强调前后的转折关系。
He usually goes to work by bike, but once in a while he goes by bus.
他通常骑自行车去上班，但偶尔也乘公共汽车。
即时训练2
用适当的连词填空
1. I lived there, I used to go to the seashore on Sundays.
2. The telephone rang I was taking a shower.
3. He hurried home, looking behind he went.
4. I was walking down the street, I came across an old friend of mine.
5. time goes on, it's getting warmer and warmer.
答案：
1. When 2. while 3. as 4. When/While/As 5. As
3. not. . . without. . . 没有……. 就不能……
双重否定句最主要的功能就是通过两个否定词在句子中互相抵消其否定的含义，从而实现“否定+否定=肯定”，加强句子的肯定语气。
教材原文
Of course, I couldn't live this lifestyle without a good wife. 当然，若没有一个好妻子，我是不会过上这种生活的。
经典例句
①Use your head and you will find nothing is impossible in the world.
动动脑筋你就会发现世上没有不可能的事。
②Do not take any sleeping pills without first asking your doctor.
没有事先问过医生不要吃任何安眠药。
③Freddy and his band could not go out anywhere without being followed.
弗雷迪和他的乐队无论走到哪儿都有人跟随着。
④You cannot take the books away unless you get the special permission from the dean.
除非你得到系主任的特批，否则你不能把这些书借走。（unless引导条件状语从句）
即时训练3
I. 句型转换
You can't study in this famous university if you don't work hard.
→You in this famous university hard work.
Ⅱ. 完成句子
1. 刚学英语时，他一开口说英语就出错。
At the beginning of learning English, he speak it
2. 你没有护照就无法离开那个国家。
You a passport.
3. 没有你的帮助，我们无法完成这项任务。
，we can't finish the task.
4. 没有空气和水，我们就无法生存。
We could not live .
答案：
I. can't study;without
Ⅱ. 1. could not；without making mistakes
2. can't leave that country without
3. Without your help
4. without air or water
4. before引导时间状语从句
教材原文
I normally wake up about five minutes before my alarm clock goes off. 我通常在闹钟响前大约5分钟就醒了。
经典例句
①We do want to buy something now before prices go up.
在物价上涨之前我们现在的确想买点东西。
②It was midnight before he came back.
他半夜以后才回来。
③We will never bow before difficulties.
在困难面前我们将从来不低头。
④Ithink she should have told you this before.
我想她以前应该告诉过你这个。（think后跟宾语从句）
即时训练4
用合适的词完成句子
1. Someone called me up in the middle of the night, but he hung upI could answer the phone.
2. It long before we know the result of the experiment.
3. We saw that film long.
4. They had talked only for a few minutesthey found they were quite different.
答案：
1. before 2. will not be 3. before 4. before
5. as soon as 引导时间状语从句
教材原文
As soon as I hear my alarm clock, I jump out of my bed. 我一听见闹钟响，我立刻跳下床。
经典例句
①As soon as he got inside, the dog shook its tail.
他一进来，狗就开始摇头摆尾。
②As soon as he heard the news, he jumped with joy.
他一听到这个消息就高兴地跳了起来。
③As soon as relations improve they will be allowed to go.
一旦关系有所改善，他们就会获准离开。
④I'll return the book as soon as I have read it.
我一读完这本书就还回去。
⑤I will go with you as soorn as I have washed my face.
我洗完脸就跟你去。（从句中用现在完成时，表达“刚完成某事就……”)
6. 序数词/形容词最高级/the very/the only 等+名词+to do
如果名词前有序数词、形容词最高级，或有the very、the only、the last、the next等修饰，而后面又要用非谓语动词时，一般使用动词不定式作定语。
教材原文
I am always the first person to get to the office. 我总是第一个到办公室。
经典例句
①She was the only one to survive in the air crash.
她是这次空难中唯一的幸存者。
②The largest animal ever to live on the earth is the blue whale.
曾经生活在地球上的最大的动物是蓝鲸。
③Mr Allen was the very person to help her to improve management.
Allen 先生正是帮助她改进管理的那个人。
④The only way to avoid being bitten by a bear is to pretend to be dead.
避免被熊咬伤的唯一方法就是装死。（to pretend to be dead为不定式短作表语）
即时训练5
用括号内单词的适当形式填空
1. She is always the first (answer) questions.
2. He would be the last (agree) to the plan.
3. Don't you think it's the best way (solve) the problem
4. That's the best tree (suit) the yard.
5. The only room (seat) all the ten people is on the second floor.
答案：
1. to answer 2. to agree 3. to solve 4. to suit 5. to seat
7. so that引导目的状语从句
so that引导目的状语从句时，表示“以便；为了”。in order that也可以引导目的状语从句，常与s0that互换。s0that一般不用于句首，而in order that可用于句首。当sothat/in order that引导的从句的主语和主句的主语一致时，可将从句简化为in order to/so as to结构。但so as to不能放在句首，而in order to可以放在句首。
教材原文
When I get home at about ten, I look at some documents that I bring back from the ofice so that I can be ready for the next day's work. 大约10点钟我到家，到家后还要看从办公室带回的一些文件，以便为第二天的工作做好准备。
经典例句
①We learn English so that we may get more knowledge.
我们学英语为的是可以获得更多的知识。
②He spoke clearly so that everybody could understand him.
他讲话讲得很清楚，以便大家都能听懂。
③We'll sit in the front of the hall so that we can hear more clearly(=in order to hear more clearly) .
我们将坐在大厅前面，以便听得更清。
④The police in our city work hard in order that the rest of us can live a safe life.
我们市里的警察努力工作是为了让我们其余的人能过安全的生活。（in order that. . . 相当于so that引导的目的状语从句）
易混辨析
so that引导目的状语从句和结果状语从句的大致区别：
（1）so that 引导的目的状语从句中常用may、might、should、would、can、could等情态动词。而so that引导的结果状语从句中一般不用上述情态动词，即便用了情态动词，也主要表示事实。
（2) 就so that的位置而言，引导目的状语从句时通常放在一起而不分开；引导结果状语从句时，看实际情况而定，有的放在一起，有的却分开，采取so. . . that. . . 的形式。例如：She is so lovely that we all like to play with her. 她很可爱，我们都喜欢和她玩。
（3）从标点符号的使用情况看，sothat引导的结果状语从句多数在从句前使用逗号，而so that引导的目的状语从句前一般不用标点符号。
即时训练6
单句语法填空
1. Please set down your address we can keep in touch with each other.
2. The important thing is to learn to control your temper you will not do or say anything you'll regret.
3. It is also useful to know how to bring other speakers into your conversation you can keep them interested.
答案：
1. so that 2. so that 3. so that