第1个回答 2019-10-20
1．在句中担当宾语的从句叫宾语从句，宾语从句可作谓语动词的宾语，也可做介词的宾语。eg,
He
said
he
was
good
at
drawing.
(动词宾语)
He
asks
him
how
long
Mike
has
been
down
.
(动词宾语)
Miss
Zhang
is
angry
at
what
you
said.
(介词宾语)
2．
宾语从句的引导词有三类：
(1)
以that
引导的宾语从句，主要用来引导句形式的宾语从句，
that可以省略。eg,
The
radio
says
(that)
the
clouds
will
lift
later
on.
She
told
me
(that)
she
would
like
to
go
with
us.
(2)
以连接代词which,
what,
who等或连接副词how,
where,
why
等引导的宾语从句，从句是陈述语序
eg,
Could
you
tell
me
what’s
the
matter
with
u?
I
want
to
know
how
soon
it
will
begin.
(3)
以
whether
或
if
引导的宾语从句,
主要用来引导一般疑问句意思或选择疑问句意思的宾语从句，从句同样是陈述语序
eg,
I
wonder
if
/whether
u
have
told
the
new
to
Li
Lei
.
3．宾语从句的时态
(1)
当主句为一般现在时态、现在进行时态、或一般将来时态时，从句可用所需要的任何时态。
eg,
I
want
to
know
what
time
he
got
up
this
morning.
You
are
telling
me
that
you
won’t
stop
until
tomorrow?
(2)
当主句为一般过去时态时，
从句要用于过去有关的时态。
eg,They
asked
what
Jean
was
doing
now
.
Linda
said
that
the
train
had
left.
(3)
当从句表述的是客观真理或自然现象时，宾语从句要使用一般现在时。
eg,
Lisa
asked
whether
light
travels
faster
than
sound.
Polly
said
no
news
is
a
good
news
注意：一般情况下，whether
和if
可以互用，
但有些情况例外。
1.
当从句做介词的宾于是只用whether
不用if
eg,
We
are
talking
about
whether
we’ll
go
on
the
pinic.
2.
引导词与动词不定式或
not
连用时，
只用whether.
eg,
Please
let
me
know
what
to
do
next.
Could
you
tell
me
whether
u
go
or
not?
3.
if当如果讲时，
引导的是条件状语从句，
这时不能用whether.
eg,
You
can’t
work
the
plan
out
if
you
don’t
have
the
meeting
.
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