[学习there be句型结构一致的疑问句]本单元的主题是新学生在校园里谈论学校的教室和场所。本单元的重点语法是学习there be句型结构一致的疑问句IS/Are there..?和特殊疑问句How many are there?及其答语，本单元...+阅读

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...

例如： There are three reasons for the changes that he 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.

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 divid

esinto 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： puters are now being used everywhere，whether in the government，in schools or in business.Soon，puters will be found in every home，too.We he good reason to say that puters are playing an increasingly important role in our life and we he stepped into the puter Age.

5.表示措施

1）We should take some effective measures.

2）We should try our best to overe（conquer）the difficulties.

3）We should do our utmost in doing sth.

4）We should solve the problems that we are confronted（faced）with.

例如： The housing problem that we are confronted with is being more and more serious.Therefore，we must take some effective measures to solve it.

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