(共17张PPT)
Unit
2
Days
and
Months
Lesson
8
冀教·四年级下册
Numbers
This
is
a
race.
Li
Ming
is
the
first.
The
girl
is
the
second.
The
boy
in
red
shorts
is
the
third.
Let’s
say
them
together!
Let’s
say
them
together!
Language
points
1.
Li
Ming
is
the
first.
李明是第一名。
first
与
one
first
和
one都与“一”有关,但是one表示数量“一”,first表示顺序“第一”。
例句:I’m
the
first.
我是第一。
I
have
one
book.
我有一本书。
定义:用来表示顺序的数词叫序数词。
序数词常与定冠词the连用。序数词可以由基数词变化而来,基数词变序数词的规则主要有以下几种:
1~3的序数词分别为:first,second,third
没有变化规律,需要特殊记忆。
拓展:序数词的变化规则
4~19的序数词:通常由基数词加后缀-th构成,其中特殊的有:five
—
fifth
第五
eight
—
eighth
第八
nine
—
ninth
第九
twelve
—
twelfth
第十二
整十(不包含ten)的序数词:要先把基数词词尾的-y变成-ie,再加-th。
twenty
—
twentieth
第二十
thirty
—
thirtieth
第三十
forty
—
fortieth
第四十
大于二十的两位数只把个位数变成序数词即可。
twenty-one
—
twenty-first
第二十一
forty-four
—
forty-fourth
第四十四
注意:序数词有时候可以用缩写形式来表示,由阿拉伯
数字加上对应序数词的最后两个字母构成。
例如:first-1st,second-2nd,third-3rd,
fourth-4th,twentieth-20th
in
穿着……;戴着……
例句:这个穿着绿色短裙的女孩是我的妹妹。
The
girl
in
green
shirt
is
my
sister.
2.
The
boy
in
red
shorts
is
the
third.
这个穿红色短裤的男孩是第三名。
Let’s
do
it!
Pair
work.
Match
and
say.
Let’s
say
the
months
of
the
year.
January
is
the
first
month.
Talk
in
groups
Let’s
say
the
months
of
the
year.
February
is
the
second
month.
March
is
the
third
month.
April
is
the
fourth
month.
May
is
the
fifth
month.
June
is
the
sixth
month.