1． 表明观点与看法

1) People have (take, adopt, assume) different attitude towards sth.

2) People have different opinions on this problem.

3) There exist different opinions on this problem.

4) People take different views of (on) the question.

5) Some people believe that…Others argue that…

2． 说明重要、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.

3． 表述利弊或好坏

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.

6) It has more disadvantages than advantages.

7) It does us much harm.

8) It is harmful to us.

4． 解释原因与结果

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 that…

5) We have good reason to believe that…

6) The reason for this is not far to seek.