Unit4 SectionA 1a-1c 课件（新目标七年级下册Unit 4 Don't eat in class）

(共29张PPT)
Section A 1a-1c
Unit 4
Don’t eat in class.
Unit 4
Don’t eat in class.
Warming up
Warming up
—Can you...
—Yes, I can./No, I can’t.
can 表示能力
Warming up
Warming up
—Can you...
—Yes, I can./No, I can’t.
can 表示能力
guitar
violin
guitar
Language points
情态动词
can
1. 表示能力：“会，可以，能，能够”
2. 不能单独作谓语，后必须接动词原形一起构成谓语
3. 没有人称的数的变化
4. 否定形式加not: can not,cannot, 或缩写can't疑问句can 提前。
例： She can play the guitar.
Can she play the guitar
Can we eat in the classroom
No, we can’t.
Can we eat in the dining hall
Yes, we can.
Don’t eat in the classrooms.
Don’t eat in the classrooms.
Don’t+动词原形+其他
为祈使句的否定形式，
表示“不允许做某事”
You must eat in the dining hall.
You must eat in the dining hall.
must+动词原形+其他
表示“必须做某事”
What do the signs mean
rules
Don’t litter
No smoking
No music
Keep silence
No mobile phones
No eating or drinking
/ru l/ n.
Read the school rules in the picture.
Pre-listening
SCHOOL RULES
1. Don’t arrive late for
class. You must be on
time.
2. Don’t run in the hallways.
3. Don’t eat in the classroom.
You must eat in the dining
hall.
4. Don’t listen to music in class.
5. Don’t fight.
Don’t arrive late for class.
You must be on time.
late for class
上课迟到
be on time.
准时
Don’t run in the hallways.
run in the hallways.
在走廊里跑
Don’t eat in the classroom.
You must eat in the dining hall.
dining hall
餐厅
Don’t listen to music in class.
listen to
听……
Don’t fight.
hallway
be on time
fight
arrive
must
don’t
listen to
dinning
hall
rule
Read the words and phrases before they are disappearing.
1a
1
2
3
4
5
SCHOOL RULES
1. Don’t arrive late for class.
You must be on time.
2. Don’t run in the hallways.
3. Don’t eat in the classroom.
You must eat in the dining hall.
4. Don’t listen to music in class.
5. Don’t fight.
Which rules are these students breaking Write the
number of the rule next to the student.
1. Don’t arrive late for class. 上课不要迟到。(教材P19 1a)
【用法详解】arrive是不及物动词，具体用法如下：
若接地点名 词，要加介词in或at。 in后接大地方(如城市或国家)。 When did you arrive in Dalian 你是什么时候到大连的？
at后接小地方(如学校、酒店或车站)。 I usually arrive at the bus stop at 6:30 every morning. 我通常每天早晨6:30到公共汽车站。
若接地点副词(here/there/home等)，则不用介词。 My father arrives home late every night. 我爸爸每天晚上很晚到家。
Point1
must modal v. 必须
2. You must be on time. 你必须准时。(教材P19 1a)
【用法详解】must 为情态动词，无人称和数的变化。情态动词不能单独作谓语，必须与动词原形一起构成谓语。本句的谓语由“must+be”构成。
Point2
You must obey the school rules.
Eg
on time 准时
2. You must be on time. 你必须准时。(教材P19 1a)
【易混辨析】on time 与in time
on time 按时；准时 指按规定或指定的时间
in time 及时 指不迟到或接近规定的时间
The plane takes off on time.
An ambulance arrived in time.
Point2
Eg
3. Don’t fight. 不要打架。(教材P19 1a)
【用法详解】（1）fight在句中作动词，意为“打架”，常用短语：fight with sb.“和某人打架”。
fight v. & n. 打架；战斗
Point
Don’t fight with the driver in the bus, or you’ll be punished
Eg
（3）fight也可作名词，意为“打架；战斗”，短语have a fight(with sb.) 表示“（和某人）打架”。
It’s not right to have a fight with your friend.
Eg
（2）fight作动词，还有“战斗”的意思。
They fought against the enemy fiercely.
Eg
Mike______
1b
Listen. What rules are these students breaking Write the numbers after the names.
While-listening
Peter______
2
Amy______
3
4
祈使句
Grammar focus
1.祈使句是表示命令、叮嘱、号召等的句子;
2.通常省略主语you;
3.Do/Don't + 动词原形;
4.祈使句有肯定和否定两种：
否定
Don’t eat in class.
Don’t fight.
肯定
Come in, please! 请进！
Sit down, please. 请坐。 　
祈使句的否定形式
1. Don’t arrive late for class. 上课不要迟到。(教材P19 1a)
【用法详解】本句是祈使句的否定形式，结构为“Don’t +动词原形+其他“。祈使句通常省略主语you，以动词原形开头，用于向对方发出指令、请求等。
Point2
Read more books, and you will improve your reading skills.
Don’t answer the phone while crossing the road.
Eg
肯定祈使句 否定祈使句
Sit down.
Come in.
Get up.
4. Listen to music in my room.
Don’t sit down.
Don’t come in .
Don’t get up.
Don’t listen to music in my room.
祈使句补充
1. Be＋adj（形容词）
如：Be quick!快一点！ Be quiet! 安静！
2. Let +宾语+动词原形+其他成分。
注：let后面的宾语是第一人称的时候，否定形式是在宾语后面加not。
如：Let’s not do that again.
如果let的后面宾语是第三人称的时候，否定形式是在
let前加助动词don’t
如：Don’t let them come in.
What rules
do we have
eating
Listening
to music
clothes
1. ___listen to music in the classroom or hallways can can’t
2. ___listen to music in the music room can can’t
3. ___listen to music outside can can’t
4. ___ eat in the classroom can can’t
5. ___eat in the dining hall can can’t
6. ___eat outside can can’t
7. ___wear a hat can can’t
8. ___fight can can’t
Read the activities.
Activity
【用法详解】wear作动词，强调状态。其宾语除衣服、鞋、帽子、手套外，还可以是首饰、眼镜、耳机、胡子、假发、奖章等。
Wear a hat。(教材P20 2a)
wear v. 穿；戴
Point
You should wear a hat for the party.
Don’t wear earphones while you are out.
She always wears a pair of glasses.
Eg