As 在定语从句中的用法?麻烦介绍的简单通俗点!

Question

如题所述

Answer 1

1.
as
既可以引导限制性定语从句，也可以引导非限制性定语从句;是关系代词，先行词既可以是某个名词或代词，也可以是整个句子;既引导从句，又在从句中作成分。
2.
as
引导限制性定语从句时常用于如下结构，the
same…as…;
as…as…;such…as…;so...as…等,例如，
This
is
the
same
pen
as
I
lost
yesterday.
(as引导的定语从句先行词是
pen，在从句中作lost的宾语)
Don’t
trust
such
people
as
speak
ill
of
you
behind
your
back.(
as引导的定语从句先行词是people，在从句中作主语)
3.
as
引导非限制性定语从句时常用于如下结构，
as
we
all
know;
as
is
known
to
all;
as
is
often
the
case;
as
we
can
see,
as
we
(had)expected
等，例如，
As
is
known
to
all,
knowledge
comes
from
practice.(as引导的定语从句先行词是整个句子，在从句中作主语)
He
won
the
first
prize
in
the
contest,
as
we
had
expected.
(as引导的定语从句先行词是整个句子，在从句中作expected的宾语)
希望能帮到你!