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Unit 12
Life is full of unexpected.
Section A
1a-2d
/, n k’spekt d /
Brainstorm
unexpected
events
be late for school
miss the bus
lose the key
left the schoolbag at home
receive the birthday present

the shower was used by someone when you want to use it
A: What happened to them
B: By the time they ________________, the bus _________________.
got to the bus stop
had already gone
when
A: What happened to the boy
B: By the time he ______________________, he realized he ____________________.
woke up in the morning
had already been late
A:_______________
B: By the time he __________,
the keys _________.
got home
What happened
had lost
1a
Look at the pictures. What happened to the girl
She woke up late.
She wanted to use the bathroom.
She ran to catch the bus.
The bus had just left.
She got to school and realized she had left her bag at home.
1b
Listen to Marry talking about her plete the sentences.
By the time I got up, my brother _______already _______ in the shower.
2. By the time I got outside, the bus _____already _____.
3. When I got to school, I realized I _______ ______ my backpack at home.
had
gotten
had
left
had
left
by the time “在……以前”=when
by the time + 表示过去的时间状语从句
主句常用过去完成时: had+动词过去分词
2a
Listen to Mary continue her story. Number the pictures (1-4) in the correct order.
1
3
2
4
2b
Fill in the blanks with the correct forms of the verbs in the brackets. Then listen again and check your answers.
When I _____ (get) home, I realized _______ (leave) my keys in the backpack.
By the time I ______ (get) back to school, the bell _________(ring).
By the time I ______ (walk) into class, the teacher ___________ (start) teaching already.
got
had left
got
had rung
walked
had started
One day, Mary looked pretty tired because she had a bad morning. First of all, she ________. By the time_________, her brother ______________ in the shower. After he got out of the shower, she ________________and __________. But by the time she ____________, the bus______________. So she ____________________. But when she __________, she realized she _________________________. Then, she ran home to get her backpack. But when she _______, she realized she __________________________. So she ran back to school without her keys or backpack. But by the time she__________________, the bell had rung. And by the time she walked into the class, the teacher _________________________. She asked for their homework, but of course she______________.
overslept
she got up
had already gotten
took a quick shower
got dressed
went outside
had already left
ran all the way to school
got to school
had left her backpack at home
got home
had left her keys in the backpack
got back to school
had started teaching already
didn't have it
Try to retell the story about Mary
overslept;
got up, shower;
went outside, had left;
ran;
got to school, had left backpack home
ran home;
got home, had left keys;
ran back to school;
had rung;
walked into the class, had started teaching
2d
What can you see in the picture
Can you guess what the dialog is about
M: Why were you late for class today, Kevin
K: My alarm clock didn’t ________! I kept sleeping,
and when I ___________, it was already 8:00 a.m.!
M: Oh, no!
K: So I just quickly _________ some clothes and __________
the door.
M: You didn’t _______________
K: No, I didn’t even _______________ or ______________!
But before I _______ the bus stop, the bus had already left.
M: Then how did you get here
K: Luckily, Carl’s dad saw me on the street and ____________
in his car.
M: Well, at least by the time you got to school, you were only
five minutes late for the class.
go off
woke up
put on
rushed out
eat breakfast
brush my teeth
wash my face
got to
gave me a lift
imitate
Complete the following sentences.
1)当我到达学校的时候， 我才意识到我把书包忘在家里了。When I got to school, I realized I ______ ______ my
backpack at home.
2）到我返回学校的时候， 铃声已经响过了。
__________ I got back to school, the bell ____________.
3）我到达公共汽车站之前， 汽车已经离开了。
Before I _____ the bus stop, the bus ________.
4）我决定先买一杯咖啡，然后再准备去办公室，
I ____________ go up to my office when I decided to
get a coffee first.
5）就在我和别的工作人员一起排队等候的时候，听到了一个巨大的声响。
As I _________________ with the other office workers, I
__________________.
had
left
By the time
had rung
got to
had left
was about to
was waiting in line
heard a loud noise
过去完成时
1) 完成用法：过去某一时刻或某一 事件前完成的动作或状态。
I had written the article when they came.
By December last year, he had worked in Beijing for five years.
2) 未完成用法：过去某一时刻或某一事件前已经
开始，一直延续到这一过去时间，而且到那时
还未结束,仍有继续下去的可能性。
1. 当我到车站时，火车已经离开了。
2. 他告诉我他从未去过北京。
3. 到上个学期结束的时候，我们已经学习了2000
个单词。
4. 他睡觉以前，已经连续工作了12个小时。
When I arrived at the station, the train had left.
He told me he had never been to Beijing.
We had learned 2000 words by the end of last term.
Before he slept, he had worked for 12 hours.

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