基数词变序数词的规律
春夏秋冬各开什么花-
基数词变序数词的规律
一、二、三,单独记;八去
t
,九除
e
,
ve<
/p>
要用
f
替,
整十基数变序数,先把
ty
变成
tie
;
要是遇到两位
数,十位基数个位序,
th
最后加上去。
解析口诀:
one
→
first
,
two<
/p>
→
second
,
three
→
third
这三个词
变化特殊,要单独记;
eight
→
eighth
,
nine
→
ninth
,
八去
t
,九去
e
p>
后再加
-th
;
five
→
fifth
,
twelve
→
twel
fth
,五、十二把
ve
换成
f
再加
-th
;
twenty
→
t
wentieth
,
thirty
→
thirtieth...
< br>整十先把词尾
y
改为
ie
再加
-th
。
p>
两位数时则十位数用基数词,个位数用序数词,如:
twenty-
first
。
时间介词
at in on
1
)
at
表示具体的时间,意思是“在某一时刻”,常与
o
’
clock
,
half
past
six
等表示具体时间的<
/p>
短语连用。
如:
He always gets up at seven
every morning.
2
)
in
表示一段时间,常用
January
等表示月份的词和
spring
等表示季节的词连用;
表示上午,
下午和晚上也用
in
(
in the morning/ in the afternoon/
in the evening
)如:
You shouldn
’
t
sleep late in the morning.
3
)
on
表示具体的某一天,意思是“在„„那天”,常和表示星期的词连用。如:
My birthday is
on the 6th of May.
We
have seven classes on Monday.
4
)
before
和
after
表示时间的先后顺序。
before
表示时间“在„„之前”。如:
The day before
Thursday is Wednesday.
after
表示时间“在„„之后”。如:
T
he boys often play football after school.
5
)
from
„
to
„的结构,意思是“从„„到„„”。如:
We
have
classes
from
Monday
to
Friday.
She worked in the garden from morning
to evening.
注意:
from
„
to
„也可以用来表示地点,意思仍然是“从„„到„„”。如
:
This train is
from Beijing to Tianjin.
●表示方式,手段的介词
(
常见的表
示方式、手段的介词有
by
和
in)
1
)
by
表示“靠„„;用„„”。如:
My mother goes
to work by bus every day.
注意:这里有个特殊用法是
on
foot
,表示“步行”。如:
We go to
school on foot.
2
)
in
表示“用„„语言”。如:
What
’
s
this
in
English?
She
can
sing
this
song
in
French.
知识点
1
.
excited
< br>和
exciting
的区别
excited
< br>:兴奋的,激动的。
(Sb.+ excited)
exciting
:使人激动的,令
人兴奋的。用于形容事物或事情。
(sth.+exciting)
如:
I am very excited.
我很兴奋。
(sb.+excited)
It's an
exciting story.
这是一个使人激动的故事。
(sth.+exciting)
用
exc
ited
和
exciting
填空
p>
1. an
__________ story 2. an _________ boy
3. The boys are very
__________. They are playing an ___________
computer game.
4. The children are very _________on
Children
’
s Day.