英语主语从句的短文

Question

谁能告诉我！！！！！

Answer 1

主语从句
1、定义：先找到句子的谓语，主句的谓语前面的从句，叫做主语从句。
Why
he
left
wasn't
important.(wasn't是主句的谓语动词，why
he
left做主语从句)
That
she
became
an
artist
may
have
been
due
to
her
father's
influence.(may
have
been
due是主句的谓语动词，that
she
became
an
artist做主语从句)
2、借助形式主语it，主语从句放在后面
①由that引导的主语从句可以放在主语的位置，这时that不可以省略。例如：That
prices
will
go
up
is
certain.
that主语从句放在句首的情况不是很常见，绝大部分主语从句都借助形式主语it，主语从句放在后面。
It
is
strange
that
he
knows
nothing
about
it.
It
is
a
pity
that
he
can't
swim.
It
happened
that
he
wasn't
in
that
day.
It
is
said
that
there
has
been
an
earthquake
in
India.
在口语中，用it做形式主语时，主语从句的that可以省略。
②wh-疑问词引导的主语从句，可以放在句首(第一组)，也可以借助形式主语it(第二组)。
第一组：When
he'll
be
back
depends
much
on
the
weather.
How
it
was
done
was
a
mystery.
Whether
we'll
succeed
remains
to
be
seen.
第二组：It
is
uncertain
whether
the
game
will
be
held.
It's
a
puzzle
how
life
began.
It
doesn't
matter
much
where
we
live.
Is
it
known
where
he
went？

Answer 2

在句子中担当主语的从句就叫做主语从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。