一、表示变化
1)Some changes have taken place in the past five years.
2)A great change will certainly be produced in the world’s communications.
3)The computer has brought about many changes in education.
changes have taken place in the past five years==the past five years have seen the changes.过去五年发生了很多变化
t changes will certainly be produced in the international communications.
has increased/decreased from…to…
output of July in this factory increased by 15%.
例如： Some changes have taken place in people’s diet in the past five major reasons for these changes are not far to days，more and more people are switching from grain to meat for protein，and from fruit and vegetable to milk for vitamins.
二、表示事实、现状
1)We cannot ignore the fact that...
2)No one can deny the fact that...
3)There is no denying the fact that...
4)This is a phenomenon that many people are interested in.
5)However，that's not the case.
6)be closely related to (与...息息相关)
例如： We cannot ignore the fact that industrialization brings with it the problems of solveproblems， we can start by educating the public about the hazards of government on its part should also design stricter laws to promote a cleaner environment.
三、表示比较
1)Compared with A，B...
2)I prefer to read rather than watch TV.
3)There is a striking contrast between them.
例如： Compared with cars，bicycles have several advantages besides being tly，they do not consume natural resources of ndly，they do not cause the pollution but not least，they contribute to people’s health by giving them due physical exercise.
四、表示措施
1：We should take some effective measures.
2：We should try our best to overcome/conquer the difficulties.
3：We should do our most in doing sth.我们应该尽力去做……
4：We should solve the problems that we are confronted/faced with.
例如：The housing problem that we are confronted with is becoming more and more efore，we must take some effective measures to solve it.
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