雅思写作语法讲解：形式主语从句　　形式主语从句是雅思写作中非常常用的一种句型。
我们先来看一下它是如何构成的。
。
比如说： is clear.
这就是主语从句的基本形式。
但如果句子要是这样，主语过长。
所以，我们习惯于用it来代替原来的主语。
而把原来的主语放在句子的较后。
这句话可改为：It is clear that education is important.
这就叫做形式主语从句。
　　以下的形式主语从句句型在雅思写作中都常常用到。
希望大家能认真掌握，灵活遥。
　　1 It is often the case that 　　2 Its a fact that 　　3 It seems that 　　4 Its said that 　　5 Its reported that 　　6 Its believed that 　　7 Its universally accepted that 　　8 Its announced that 　　9 Its estimated that 　　10 It must be admitted that 　　11 Its obvious that 　　12 It must be stressed out that 　　13 It is widely-accepted that 　　14 It cannot be denied that 　　15 It can be foreseen that 　　16 Its as clear as crystal that 　　17 It goes without saying that 　　18 It is acknowledged that 　　19 It is well-known that 　　20 It is estimated that