It is ------ that ---- 句型
(1) It is + 名詞 + 從句
It is a fact/an honour ---that+陳述語氣從句
例:It is a fact that the earth moves around the sun.
地球圍繞太陽轉(zhuǎn)是事實。
It is a pity/shame/no wonder that+ 虛擬語氣從句
例:It is a pity that he should not come. 他若不來可真是遺憾。
(2) It is + 形容詞 + 從句
It is natural/important/necessary/strange that + 虛擬語氣從句
例:It is important that enough money be collected to fund the project.
重要的是募集足夠的錢,為這個項目提供資金。
It is obvious/apparent/clear that+ 陳述語氣從句
例:It is clear that she doesn't like the dress at all.
這很清楚她一點兒也不喜歡這條裙子。
(3) It + 過去分詞 + 從句
It is generally/commonly believed /accepted/thought/heldthat ...
+陳述語氣從句
例:It is universally acknowledged that trees are indispensable to us.
全世界都知道樹木對我們是不可或缺的。
It is suggested/ordered/desired/requested/decided that +虛擬語氣從句
例句:It is suggested that we should hold a meeting next week.
建議我們下周開上會。
would have done = 本來就會去做某事而沒做
could have done = 本可以做某事而沒做
might have done本可以做而沒做例:They ought to have apologized.他們本該道歉的。