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 tly，people’s living standard has been greatly ndly，most people are well paid，and they can afford what they need or but not least，more and more people prefer to enjoy modern life.
注：如考生写第一个句子没有把握，可将其改写成两个句子。如：Great changes have taken place in our life. There are three reasons for this.这样写可以避免套用中的表达失误。新四六级备考专题：包含报考信息、四六级新题型介绍、四级满分牛人经验谈等
2.表示好处
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.
例如：
Books are like ca n help us know the world better，and they can open our minds and widen our efore，reading extensively is of great benefit to us.
3.表示坏处
1)It has more disadvantages than advantages.
2)It does us much harm.
3)It is harmfulto us.
例如：
However，everything dividesinto vision can also be harmful to can do harm to our health and make us lazy if we spend too much time watching televi- sion.
4.表示重要、必要、困难、方便、可能
1)It is important(necessary，difficult，convenient， possible)for do sth.
2)We think it necessary to do sth.
3)It plays an important role in our life.
例如：
Computers are now being used everywhere，whether in the government，in schools or in
