It is true that he has made a very important discovery in chemistry.啥主语句
第1个回答 2019-04-10
it形式主语
that
he
has
made
a
very
important
discovery
in
chemistry.that引导主语句真主语
同位语句同位语必须先行词比:
The
news
that
we
won
the
game
is
exciting.
that句同位语句news同位语说明news内容
给句根本没像news先行词
说定主语句说it形式主语比:
It
is
fun
to
play
computer
games.
主语句定式做主语
that
he
has
made
a
very
important
discovery
in
chemistry.that引导主语句真主语
同位语句同位语必须先行词比:
The
news
that
we
won
the
game
is
exciting.
that句同位语句news同位语说明news内容
给句根本没像news先行词
说定主语句说it形式主语比:
It
is
fun
to
play
computer
games.
主语句定式做主语
