1The best way to solve the troubles is……解决这些麻烦的最好办法是……

　　2As far as something is concerned,……就某事而言……

　　3;It is obvious that……很显然……

　　4It may be true that……but it doesn't mean that……可能……是对的但这并不意味着……

　　5;It is natural to believe that……but we shouldn't ignore that……认为……是自然的但我们不应忽视……

　　6There is no evidence to suggest that……没有证据表明……

　　1It is important(necessary/difficult/convenient/possible)for sb to do sth.对于某人做……是……

　　2It plays an important role in our life.

　　1It has the following advantages.它有如下优势

　　2It is beneficial/harmful to us.==It is of great benefit/harm to us.它对我们有益处

　　3:It has more disadvantages than advantage.他有很多不足之处