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:
1. 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.L ast but not least,more and more
people prefer to enjoy modern life.
2. Great changes have taken place in our
life. There are three reasons for this.
2.表示坏处
1) It has more disadvantages than
advantages.
2) It does us much harm.
3) It is harmful to us.
例如:
However, everything divides into 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 televisio
4.表示重要、必要、困难、方便、可能
1) It is important(ncessary, 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 foun
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.