(共23张PPT)
Unit
2
There
are
forty
students
in
our
class.
Lesson
12
精通·四年级下册
Review
twenty-one
twenty-two
twenty-three
twenty-four
twenty-five
twenty-six
二十一
二十二
二十三
二十四
二十五
二十六
twenty-seven
twenty-eight
twenty-nine
eleven
twelve
thirty
二十七
二十八
二十九
十一
十二
三十
forty
fifty
sixty
seventy
eighty
ninety
one
hundred
四十
五十
六十
七十
八十
九十
一百
1.
问答数量的句型：
—How
many+可数名词复数+are
there+其他？
—(There
is/are+)基数词.
你们班有多少名学生。
—How
many
students
are
there
in
your
class.
有40名学生。
—There
are
forty
students.
2.
Let’s引导的祈使句，表示让我们做某事：
Let’s
do
sth.
让我们从一数到二十九报数。
Let’s
count
from
1
to
29.
3.
表示……怎么样的句型：How
about…？
你们学校怎么样？
How
about
your
school?
4.
问答对方拥有物品的具体数量的句型：
—How
many
+
名词的复数形式+
do
you
have?
—I/we+
have
+
a/an+
可数名词单数.
—(I/we+
have
+)基数词(+可数名词复数形式).
—How
many
bags
do
you
have?
你们有多少书包？
—We
have
ninety
bags.我们有90个书包。
Fun
story
Let’s
help
children
in
need.
We
need
books.
How
many
books
do
you
have?
I
have
twenty-five
books.
How
many
books
do
you
have?
I
have
thirty-five
books.
How
many
books
do
you
have?
I
have
forty
books.
We
have
one
hundred
books
now.
No,
we
have
ninety-nine
books.
Why?
There’s
one
book
here!
Language
points
1.
Let’s
help
children
in
need.
我们帮助需要帮助的孩子们吧！
help
sb.
/
sth.
帮助某人/某事。
例：我们需要帮助那只小狗。
We
need
help
the
small
dog.
in
need意为“在危难中，在穷困中”
例句：他非常贫穷。
He
is
in
great
need．
2.
We
need
books.我们需要书。
此句中need为实义动词，意为“需要”。其用法如下：
(1)当主语为物时，后接名词或动词-ing。
例句:
这些花需要浇水。
The
flowers
need
watering.
(2)当主语是人时，后可接名词和动词不定式.
即：need
sth./
need
to
do
sth.
例句:
He
needs
some
help.
You
need
to
wear
more
clothes.
注意：need后跟不定式且用于否定句中时，表示
“不必”，指没义务或没必要做某事。
例句:
你不必马上做那件事情。
You
don't
need
to
do
it
at
once.
Let’s
check
2
3
4
1
5
6
How
many
students
are
there?
There
are
fifty.
Play
roles
5×10
students
How
many
boys
are
there?
There
are
twenty-seven.
Play
roles
20+7
boys
How
many
girls
are
there?
There
are
twenty-three.
Play
roles
20+3
girls
Languages
Focus
How
many
students
are
there
in
your
class?
Twenty-nine.
How
many
students
are
there
in
your
class?
There
are
forty.
How
many
teachers
are
there
in
your
school?
There
are
fifty.
How
many
bags
do
you
have?
We
have
seventy
bags.
How
many
pens
do
you
have?
We
have
ninety
pens.
twenty-one~twenty-nine
thirty
forty
fifty
sixty
seventy
eighty
ninety
one
hundred
eleven
twelve
boy
girl
teacher
school
bag
book
pen
pencil
