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Unit 12 Section A Grammar focus-4c 学案 (知识精讲+分层作业)
【重点短语】
1.think to myself 自言自语
2.hear about 听说
3.turn into 变成
4.take off 起飞，脱掉
5.collect the math homework 收数学作业
6.make the apple pie 做苹果派/馅饼
7.show up 出现，露面
8.go to my piano lesson 去上钢琴课
【重点语法】
过去完成时
过去完成时用来表示，过去某一时间或动作以前已经发生或完成的动作，它表示动
作发生的时间是过去的过去，侧重事情的结果。
过去完成时的基本结构:
had+过去分词
请看以下几个例句:
1. By the end of last term， we had learned ten English songs.
截止上学期期末，我们已经学习了十首英文歌。
2. "When we got to the airport, we realized that we had missed the flight."
当我们到达机场时，我们意识到我们已经错过了航班。
在这个句子中，“had missed”表示在到达机场之前已经错过航班。
3. "It was already nine o'clock when we got to the party, and we realized that we had
left our keys at home."
当我们到达晚会时已经九点了，我们意识到我们把钥匙落在家里了。
在这个句子中，“had left”表示在到达晚会之前把钥匙落在家里了。
所以我们可以看出，过去完成时是有一个过去的时间点之前完成的动作。
一般情况下会出现两个句子 ，一个过去时，还有一个过去完成时态的句子。
句子动作有先后，掌握了这一点过去完成时就迎刃而解喔。
一、单项选择
( )1.—Why was he late for the international meeting?
—By the time he got to the airport, the plane already .A. has; taking off B. has; taken off
C. would; take off D. had; taken off
( )2.—You didn't watch the movie?
—Yes, but by the time I to the cinema, the movie for several minutes.
A.get; has begun B.got; had been on
C.got; had begun D.get; has been
( )3.—What did they do in the meeting room yesterday?
—They discussed what they in the last two years.
A.had done B.would do C.were doing D.did
( )4.By the end of last week, she in the west of China for two months to help the
homeless children.
A.will stay B.has stayed C.would stay D.had stayed
( )5.By the time the teacher came, we cleaning the classroom.
A.finished B.have finished C.had finished D.will finish
二、用所给单词的适当形式填空
6.That rich old man (make) a wish before he (die) last month.
7.When the Kings got to the airport, the plane (take) off.
8.I (be) at the bus stop for 20 minutes when a bus finally came.
9.Tom (say) he (read) the book twice by 2019.
10.The Reads (have) lunch before I (get) to their house at 12:30.
三、完成句子。
11.经理问我昨天开会卡拉有没有露面。
The manager asked me whether Carla at the meeting yesterday.
12.到上学期结束为止我们已经学习英语三年了。
We had studied English for three years last term.
13.地震发生时,我冲出了超市。
When the earthquake happened, I of the supermarket.
14.你查明山东到湖北的机票多少钱了吗?
Have you how much the airline ticket from Shandong to Hubei costs?
15.当他们到达火车站时,其他人已经在那里待了一个小时了。
By the time they the train station,everybody else had been there for one
hour.
四、完形填空Bread-baking is more than just good fun. It __ 16 also help you learn math and science.
Students at Nova Middle School in Florida are learning it in a bread-baking program(项
目). The program teaches students 17 to bake.
Every student 18 a recipe(食谱) first. Paula Gray, a teacher,then uses math to teach 19
about the recipes.“This much with this much makes bread.”she says.
In the 20 , cooks show students how to use yeast(酵母)to make bread rise. They will tell
the students how to get a good model. Teachers then tell the students why this happens.
Later,the students __ 21 to make their own bread.
A student named Alyssa Brennan 22 that centrifugal force(离心力) helps shape(使成形)
the bread. She says it is better than learning science in the 23 .
Richard Ingraham, a cook, says baking is 24 for students.“It teaches you math.and it also
teaches you reading and science,"he says.
All the students 25 this program and think it is good to learn it.
( )16.A.must B. can C. should D. need
( )17.A. where B. why C.what D. how
( )18.A. changes B. chooses C. saves D. answers
( )19.A. it B. him C. her D. them
( )20.A.exams B.families C. lessons D. parks
( )21.A. like B. play C. hope D. start
( )22.A. learns B. feels C.watches D. hears
( )23.A. shop B. club C. classroom D. restaurant
( )24.A. busy B. useful C. difficult D.dangerous
( )25. A. enjoy B. clean C. make D. find
五、阅读理解
Bill can see well. But he cannot recognize(认出) the faces he sees—not even his own
mother. He tells his experience. “Once, at midday, I met my mother while walking down the
street. I did not recognize her. We walked towards each other. We passed within a meter of
each other. The sidewalk was not busy. The only way I know this happened is I was told about
it that night. She was not happy about this incident. And she has never forgiven(原谅) me for
it!”
Bill has face blindness(盲). For most people, this situation can be hard to understand. But
face blindness may be more common than you think.
So, how does a person get face blindness? Well, there are two ways. Some people with
face blindness are born with the ability to recognize. But then, their brains are badly hurt. Over
thirty years ago, Lincoln Holmes was in a car accident.
The accident damaged(损害) his brain. He can still do everything just like before—walk,
talk, and work. But since the accident, Lincoln can no longer recognize faces. He cannot even
recognize people he knew after the accident happened.In the past, doctors thought that brain damage was the only way to get face blindness.
However, scientists now believe that the most common way people get face blindness is from
their parents—they inherit it! Recent studies suggest that face blindness stays in families.
But there are not any treatments(治疗) for face blindness at present.
( )16.How does the writer start the passage?
A.By explaining the meaning. B.By giving an example.
C.By showing a study. D.By giving advice.
( )17.The underlined words “this situation” in the second paragraph refer to “ ”.
A.Bill walked past his mother B.Bill has face blindness
C.Bill didn't see his mother D.Bill didn't recognize his mother
( )18.Lincoln Holmes got face blindness because of .
A.brain damage B.a bad illness
C.a sad experience D.his family's illness
( )19.What does the underlined word “inherit” in the fourth paragraph mean in Chinese?
A.模仿 B.遗传 C.脱离 D.恢复
( )20.What does the passage mainly tell us?
A.How to protect our brains. B.What to do if we get face blindness.
C.Why people get face blindness. D.How to keep away from face blindness.
六、七选五
World Sleep Day falls on 18th, March in 2022.It's a day to remind us of the
importance of sleep for our health. However, not everyone knows how important it is to
sleep in the dark. 31 ___
Researchers say sleeping with the light on could increase the risk of getting heart
disease（心脏病）and diabetes(糖尿病).If we turn off the light when we sleep, it helps to
keep away these diseases. The researchers also say that around 40 percent of people
sleep with some kind of light. 32 __ They add that the worst thing to sleep with is the
main light(主光源).Sleeping in the dark is more difficult for people who live in
cities. 33 ___
The researchers are from Northwestern University in the USA. The lead
researcher,Dr. Phyllis Zee, is an expert in sleep medicine. 34 ___ Her team did a study
of the blood sugar levels(血糖水平) of 20 people after nights of sleep.People who slept
with a light on had higher blood sugar levels the next morning compared to those who
slept in a dark environment. This is because light makes the brain active,which raises
the blood sugar level. Dr. Zee said there are three things we can do to reduce the risk ofillness. Firstly. turn off the lights. 35 __ Thirdly,use an eye mask(眼罩).
根据短文内容,从方框内所给的选项中选出能填入空白处的最佳选项。有两项多余。
A. Because there is a lot of light outside at night.
B. Secondly, never sleep with white or blue light.
C. Sleeping with a light on won't make your sleep worse.
D. Even light from a television could be harmful to our health.
E. She said it is healthier for us to turn off all lights when we sleep.
F. What's more, keep in mind that you are going to fall asleep right now.
G. A new report says sleeping with the light on could be bad for our health.
31._________ 32._________ 33._________ 34._________ 35._________Unit 12 Section A Grammar focu-4c 学案 (知识精讲+分层作业)参考答案
一、单项选择
1-5 DBADC
二、用所给单词的适当形式填空
6.had made; died 7.had taken 8.had been 9.said; had read 10.had had; got
三、完成句子
11.had shown up 12.by the end of 13.rushed out 14.found out 15.arrived at/got to
四、完形填空
16-20BDBDC 21-25DACBA
五、阅读理解
26-30BBABC
六、七选五
31-35GDAEB
