1. Compared with A,B（B的特点或者优势）.
2. The advantage far outweigh the disadvantages.
3. The advantages of A are much greater than those of B.
4. For all the disadvantages, it has its compensating advantages.
5. Evidently, it has both negative and positive effects.
1. It is important(necessary/difficult/convenient/possible)for sb to do sth..
2. It plays an important role in our life.
3. It gives us access to doing sth..
4. we have access to doing sth..
1. It is true that …, but one vital point is being left out.
2. There is a grain of truth in these statements, but they ignore a more important fact.
1. Obviously，if we don't control the problem, the chances are that（问题）will lead us in danger.
2. No doubt, unless we take effective measures, it is very likely that（问题）.
3. It is urgent that immediate measures should be taken to stop the situation.
