Question

it is +adj + that +从句 等于什么

Answer 1

it
is
+adj+that的从句
从句用虚拟语气：should
+
do；其中should
可以省略。
例子：
it
is
important
that
you
arrive
on
time.
准时到达很重要。
it
is
necessary
that
he
come
next
monday.
他有必要下周来。
it
is
natural
that
he
change
his
mind.
他改变主意很正常。
这种形容词包括
important,
necessary,
impossible,
exxential,
imperative,
natural,
urgent,
等，用于表示建议或惊奇等。

Answer 2

it
is
+
adj
+
that
+
从句
=
That
从句
is
adj.
比如it
is
necessary
that
we
learn
english.=That
we
learn
english
is
necessary.
在这个从句中that从句做主语，典型的名词性从句做主语，that是个conj.