该定语从句中的that和which是否可以省略，为什么。

Question

如题所述

Answer 1

定语从句中的that和which作从句主语时，不能省略。

这个句子包含2个定语从句，一个是that引导，一个是which引导。在that引导的从句中，piles
of
paper是作从句的宾语。

Answer 2

which不能省that则看情况，当先行词指物时用which或That，但是当that在句中充当宾语时，that可以省，其他则不可以

Answer 3

定语从句中的关系代词that和which在定语从句
中
作主语
时不能省略

作宾语时可以省略。

如
this
is
the
book
that/which
helps
me
a
lot.

this
is
the
book (
that/which )
i bought
yesterday.

前句
不可以省略 因为作主语

后句
可以省略 因为作宾语

Answer 4

例如：My
Mom
buys
the
book
which
is
useful
for
my
birthday
gift.
先行词是the
book在主句做的是宾语，但是在从句which
is
useful中做的确是主语，以不能省略
My
Mon
buys
the
book
(that/which/省略)
i
read
for
my
birthday
gift.
先行词the
book在主句中同样说的是宾语，但是在从句中
(that/which/省略)
i
read
，由于做的是read的宾语所以可以省略。

Answer 5

作宾语时可省略,如The
computer(which)
I
wanted
to
buy
was
sold
out.我想买的那种电脑已经卖完了Is
this
the
poto(that)you
took
last
summer?