1. It may give rise to a host of problems.
2. The immediate result it produces is ...
3. It will exercise a profound influence upon...
4. Its consequence can be so great that...
四)批驳
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.
3) Some people say ..., but it does not hold water.
4) Many of us have been under the illusion that...
5) A close examination would reveal how ridiculous the statement is.
6) It makes no sense to argue for ...
7) Too much stress placed on ... may lead to ...
8) Such a statement mainly rests on the assumption that ...
9) Contrary to what is widely accepted, I maintain that ...
五)举例
1) A good case in point is ...
2) As an illustration, we may take ...
3) Such examples might be given easily.
4) ...is often cited as an example.
六)证明
1) No one can deny the fact that ...
2) The idea is hardly supported by facts.
3) Unfortunately, none of the available data shows ...
4) Recent studies indicate that ...
5) There is sufficient evidence to show that ...
6) According to statistics proved by ..., it can be seen that ...