It句型
一、 知识储备
1. it作形式主语(17/33)
2. it作形式宾语(7/33)
3. it与表示时间的词连用 (5/33)
4. 强调句(4/33)
二、知识考点考查梯度
1. it作形式主语
高三
1.It is uncertain __ side effect the medicine will bring about, although about two thousand patients have taken it.
A. that B. what C. how D. whether
2.It never occurred t o me _____ you could su cceed in persuading him to change his mind.
A.which B.what C.that D. if
3.It is none of your business ______ other people think about you. Believe yourself.
A. how B. what C. which D. when
4._____ is our belief that improvements in health care will lead to a stronger, more prosperous economy.
A. As B. That C. This D. It
5.It is no _____ arguing with Bill because he will never change his mind.
