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1、
Unit21 warm up
學(xué)習(xí)目標(biāo)
By the end of the class, the students will be able to:
Learn some words about our body
學(xué)習(xí)過(guò)程
課堂活動(dòng)
（一） 預(yù)習(xí)交流
Do You Look After Yourself ?
1.How many hours do you sleep per night ?
a) under 6 hours b) about 7 or 8 hours c) more than 9 hours
2.How often do you clean
2、 your teeth ?
a) once a day b) twice a day c) after every meal
3.How often do you do physical exercise,
enough to make you out of breath ?
a) never b) once a week c) two or three times a week
4.How often do you eat sweets or chocolate?
a) never b) sometimes c) every
3、 day
5. How many pieces of fresh fruits do you eat per day ?
a) One or two b) more than two c) none
（二） 合作探究
n. 聽覺
n.間隔；間歇
n. 脈搏
vt. 消化
vi. 交換
interval
digest
swap
hearing
pulse
Read the words,then match the words with their Chinese meanings.
Find six key wo
4、rds to label the parts of the body in the diagram.
（三） 分層提高
Look at the following statements and decide which part of the body is described.
This organ weighs about a kilo and is made
up of two sides. It is like a super computer that
processes information.
This organ is like a bag
5、 which reeives
everything you eat.It digests your food
and sends vitamins and minerals into
the blood.
This organ beats at regular intervals 100,000
times a day. With each beat, it circulats 80 ml
of blood through the body—that’s 8,000 litres
of blood per day! It pumps blood into the l
6、ungs,
where it receives oxygen, Before being
pumped around the rest of the body.
This is a very delicate organ. There are
two in a body and they have delicate
lids which protect them. Light enters and
reaches special light sensitive cells. These
work like a camera and finally send signals
to the brain.
These organs absorb oxygen and get rid of
carbon dioxide. They are found
on either side of the heart. They
receive air as a result of breathing
and when blood passes through,
They give it oxygen.
（四） 總結(jié)歸納
（五） 鞏固反饋
Words
Preview lesson 1
2
北京市第一五四中學(xué)高中英語(yǔ) unit21 warm up學(xué)案（無(wú)答案）北師大版選修7
