1. Recently the issue of… has been brought to public attention

2. In the past several years there has been…

3. Now it is commonly held that… but I doubt whether…

4. Currently there is a widespread concern that…

5. Now people in growing number are coming to realize that…

6. There is a general discussion today about the issue of …

7. Faced with…，quite a few people argue that…，but other people conceive differently

8. from this point of view…