as_as的用法
-
其基本意思为
“
与
…<
/p>
一样
”
，其中的第一个
< br>as
为副词，其后通常接形容词或副词
(
用原级
)
，
第二个
as
可用作介词
(
后接名
词或代词
)
或连词
(
< br>后接从句
)
。使用时应注意以下几点。如：
(1)
在否定句中，第一个
as
也可换成
so
。如：
He doesn
’
t study
as [so] hard as his brother
.
他学习不如他弟弟努力。
(2) <
/p>
在该结构的两个
as
之间
通常接形容词或副词的
原级
，但若涉及数
量或程度，可用
“
as much+
不可数名词
+as
”
和
“
as many+
复数名词
+as
”
。如：
You
’
ve made as
many mistakes as I have.
你犯的错误和我犯的一样多。
I
haven
’
t got as much money as
I thought.
我不像原来想像的有那么多钱。
其间接形容词时，
有时该形容词还可修饰另一名词，
但这个名词应带有不定冠词
(
注意词序
)
。
如：
She is as good a teacher as her
mother
.
她和她妈妈一样是位好老师。
也可说。如：
She is a teacher as
good as her mother
.
但不说。如：
She is as a good
teacher as her mother
. /
They are as good
teachers
as
us.
(3)
第二个
as
后接从句时，
该
as
通
常为连词，
但有时这个
as
还充当其后
从句的主语或宾
语，此时该
as
实为关
系代词。如：
I gave him as much as
he could eat.
他能吃多少，我就给了他多少。
We
’
ve got food
for as many people as want it.
我们的食物，无论多少人吃都够了。
(4)
该结构根据情况可用使用以下修饰语。
如：
(not) nearly, almost, just,
nothing like,
exactly, not quite, half,
one-ten, twice, three times, 30 per cent
等，并且这些修
饰语必须置于第一个
as
之前，而不能置于其后。如：
He
doesn
’
t play half as well as
his sister
.
他演奏的水平不及他姐姐的一半。
This dress is twice as expensive as
that.
这件连衣裙比那件贵一倍。
(5)
若第二个
as
引导一个表示将来意义的从句，则该从句可用现在时表示将来，也可直接
使用将
来时态。如：
We
’
ll get there
as soon as you do [will].
你一到，我们就到。