(共30张PPT)
Unit
2
There
are
forty
students
in
our
class.
Lesson
7
精通·四年级下册
Lead-in
十一
New
words
十二
二十一
二十二
二十三
二十四
二十五
二十六
二十七
二十八
二十九
Just
talk
Good
afternoon,
boys
and
girls!
This
is
Mr
Gao,
our
new
PE
teacher.
Good
afternoon,
Mr
Gao!
How
many
students
are
there
in
your
class?
Twenty-nine.
Let’s
count
from
1
to
29!
1.
How
many
students
are
there
in
your
class.
你们班有多少名学生。
“How
many+可数名词复数+are
there+其他？”
用于询问数量。
回答用“There
is/are+基数词.”或者直接用基数词
Language
points
2.
Let’s
count
from
1
to
29.让我们从一数到二十九报数。
“Let’s
do
+某事.”,
这是祈使句，表示让我们做某事。
例：让我们去打篮球吧！
Let’s
play
basketball.
from…
to
…
从……到……
例：从家到学校
from
home
to
school
从10到100
from
10
to
100
Just
read
and
write
21
22
23
24
25
26
27
28
29
How
many
students
are
there
in
your
class?
Twenty-nine.
twenty-one
twenty-two
twenty-three
twenty-four
twenty-five
twenty-six
twenty-seven
twenty-eight
twenty-nine
How
many
students
are
there
in
your
class?
There
are
twenty-eight.
Ask
and
answer
How
many
students
are
there
in
your
class?
There
are
twenty-seven.
基数词
英语中，描述事物数量多少的数词称为基数词。
1.
1到10:
one,
two,
three,
four,
five,
six,
seven,
eight,
nine,
ten．
2.
11到19:
eleven,
twelve,
thirteen,
fourteen,
fifteen,
sixteen,
seventeen,
eighteen,
nineteen.
这
里除
eleven,
twelve,
thirteen,
fifteen,
eighteen
为特殊形式外，fourteen,
sixteen,
seventeen,
nineteen都是由其个位数形式后添加后缀-
teen构成。
3.
从
20到99
：整数几十中除twenty,
thirty,
forty,
fifty,
eighty为特殊形式外，sixty,
seventy,
ninety都是其
个位数形式后添加后缀-ty构成。表示几十几时，
在几十和个位基数词之间添加连字符“-”，
例
如：21
twenty-one
4.
百位数：个数基数词形式加“hundred”，表示几百，
在几十几与百位间加上and，表示几百几十。
Can
you
write
them?
Let’s
play
Find
your
neighbours.
Twenty-six.
Twenty-seven.
Twenty-eight.
We
are
neighbours.
Twenty-three.
Twenty-four.
Twenty-five.
We
are
neighbours.
Play
roles
