it is ... that句型有哪些？

It
is
(was)+形容词（或过去分词）+that……
结构中,
常用的形容词：
natural
(自然的),appropriate
(适当的),advisable
(合适的),preferable
(更可取的),
better
(更好的)，necessary
(必须的),important
(重要的),imperative
(急需的)
urgent
(急迫的),essential
(本质的),vital
(必不可少的)，crucial（紧急的）
probable
(很可能的),possible
(可能的)，desirable
(极好的)，advisable（合理的）,
compulsory（必须的）,desirable（理想的）,
essential（必要的）
,
imperative（迫切的）,incredible（惊人的）,necessary（必要的）,
possible（可能的）,strange（奇怪的）,urgent（紧迫的）。。。
It
is
important
that
It
is
believed
that
It
is
interesting
that
It
is
necessary
that
It
is
suggested
that
It
is
time
that