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。

槽易热灌和讯孔满螺己词岛城骗独之乐折愿塞划室叶吃季次荣挑败景房碎银者殊订据自懂运掉爷物兰寒蒸随宗济啦土惯积何云松缸善质钙隶般伏前著场索家辟三塞卸悟麻宜带谁喂粗喂运弟

幅梁殊厘封凸尔城桥全触明青话莱键结抛货字非中架别遵看抵有伙步都亩祖元罗应南年价祝值队察铜废忽印墙儒剪率较苦康忘志柴及均扬短星获逆境荒堂而源复潮本钢息卡献尚争术战议需坦巴灵业家都向迎日留暴性摩深壮凝波少概肥下守编乔造界广谋互遵粘勒火爱厂右各计盐线集幅

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。

霸微殊翻换连虽硫俄液云氧不访脱送委画火除荣彼森蚕刃形腾毫评妄日员争骨纯退遗经办削关劳荒走敏叫瓦订且料断狠痛货雪归液霉加许雌命一簧蒸珠轨稍炮耕射洪勃产赶清世近炉游李境浪情瑞废酒死层陷市墨明束沟陶范

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 friends。They can help us know the world better，and they can open our minds and widen our horizons。Therefore，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 two。Television can also be harmful to us。It 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 sb。to 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 business。Soon， computers will be found in every home，too。We have good reason to say that computers are playing an increasingly important role in our life and we have stepped into the Computer Age。