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机械设计基础课件!带传动和链传动.ppt

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机械设计基础课件!带传动和链传动.ppt

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机械设计基础课件!带传动和链传动.ppt

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文档介绍:九年级英语复****br/>冠词
郑州三中
胡松
Who is he?
He is _____ old man.
He is eating _____ hamburger.
_____ old man is ...
an
a
The
杜甫
Learning aims (学****目标)
Play a picking-apple game to tell the differences between a & an.
Discuss the exercises to identify (辨认) the use of the article (冠词) and then draw a knowledge tree.
5-year-old
European country
honest
university
NBA star
hour
news
E-mail
Canadian singer
8­year­old
online diary
unusual
Article Tree
a
an
hero
new book
5-star hotel
hour
8-year-old girl
NBA star
Task one:
university
umbrella
辨析 a & an
a
an
综述
数字开头
5-star hotel
8-year-old girl
字母U开头
university
umbrella
字母H开头
hero
hour
不看字母看读音,见了元音再加an.
1
2
3
a & an 快速检验通道
university
umbrella
unfair thing
a useful language
underground train
an usual boy
unhappy girl
unusual party
*European city
The word begins with the letter “u”
The word begins with the number
1-legged man
8-minute
speech
500-word
passage
11-year-old student
70-year history
2-month
holiday
30-meter-high building
9-meter wide river
400-meter long race
The word begins with the letter “h”
_____ honest man lived in _____ house which stands in the countryside. He often rode _____horse with _____ hat on his _____ head. But he didn’t have _____ healthy eating habit. Half _____ hour later, he would have _____ hamburger. What _____ habit!
定冠词 the
不定冠词a & an
零冠词/
特指双熟悉;
上文已提及;
复姓和乐器;
序数最高级。
下列情况不用冠; 名词之前代词限; 抽象名词不可数;
球类学科与三餐。
不定冠词两变体,
用a或an都表“一”;
可数名词首次提,
何人何物不具体。
Task two: