以下是四六級短文寫作中使用率、覆蓋面最廣的基本句式，每組句式的功能相同或相似，考生可根據(jù)自己的情況選擇其中的1－2個，做到能夠熟練正確地仿寫或套用。

　　1．表示原因
　　1）There are three reasons for this．
　　2）The reasons for this are as follows．
　　3）The reason for this is obvious．
　　4）The reason for this is not far to seek．
　　5）The reason for this is that．．．
　　6）We have good reason to believe that．．．

例如：
There are three reasons for the changes that have taken place in our life． Firstly，people’s living standard has been greatly improved．Secondly， most people are well paid， and they can afford what they need or like． Last but not least，more and more people prefer to enjoy modern life． 　
　　
注：如考生寫第一個句子沒有把握，可將其改寫成兩個句子。如：Great changes have taken place in our life． There are three reasons for this．這樣寫可以避免套用中的表達(dá)失誤。

　　2．表示好處
　　1）It has the following advantages．
　　2）It does us a lot of good．
　　3）It benefits us quite a lot．
　　4）It is beneficial to us．
　　5）It is of great benefit to us．