形式主語從句是雅思寫作中非常常用的一種句型。我們先來看一下它是怎樣構成的。(That+一個完整的句子可做主語)。比如說：(That education is important ) is clear.這就是主語從句的基本形式。但如果句子要是這樣，主語過長。所以，我們習慣于用it來代替原來的主語。而把原來的主語放在句子的最后。這句話可改為：It is clear that education is important.這就叫做形式主語從句。
以下的形式主語從句句型在雅思寫作中都常常用到。希望大家能認真掌握，靈活使用。
1It is often the case that
2It’s a fact that
3It seems that
4It’s said that
5It’s reported that
6It’s believed that
7It’s universally accepted that
8It’s announced that
9It’s estimated that
10It must be admitted that
11It’s obvious that
12It must be stressed out that
13It is widely-accepted that
14It cannot be denied that
15It can be foreseen that
16It’s 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
以下的形式主語從句句型在雅思寫作中都常常用到。希望大家能認真掌握，靈活使用。
1It is often the case that
2It’s a fact that
3It seems that
4It’s said that
5It’s reported that
6It’s believed that
7It’s universally accepted that
8It’s announced that
9It’s estimated that
10It must be admitted that
11It’s obvious that
12It must be stressed out that
13It is widely-accepted that
14It cannot be denied that
15It can be foreseen that
16It’s 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