If you are writing a paper, the most important starting point is to have a good thesis. So, ask yourself, why is English important? Spend some time thinking about it. This will be your thesis.
For example, you can say that English is important, because it is the most dominant language on earth. This can be a good thesis.
After you do this, you would want to list various reasons why this thesis is important. These will be your supporting points. You can say something like, English allows for many nations to communicate for business. In this way, cooperation can be produced, and economic gain can be shared by many nations. You can also point out that English also allows for diplomacy to take place, so that we would limit potential conflicts.
These points should get you started.