雅思写作语法解读：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怎样构成的。。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最后。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，灵活使用。

　　1It is often the case that

　　2Its a fact that

　　3It seems that

　　4Its said that

　　5Its reported that

　　6Its believed that

　　7Its universally accepted that

　　8Its announced that

　　9Its estimated that

　　10It must be admitted that

　　11Its obvious that

　　12It must be stressed out that

　　13It is widely-accepted that

　　14It cannot be denied that

　　15It can be foreseen that

　　16Its as clear as crystal that

　　17It goes without saying that

　　18 It is acknowledged that

　　19 It is well-known that

　　20 It is estimated that