第二步：提炼要点

1．a number of

2．fall ill

3．first aid

4．suffer from

5．there is no doubt that

6．make a difference

第三步：扩点成句

1．In our daily life，we sometimes come across a number of cases where people suffer from heart attacks or they fall

ill suddenly.

2．So there is no doubt that we should know some knowledge of first aid.

3．I really hope the tips above will make a difference to you.

【参考范文】

First Aid for Seizures

In our daily life，we sometimes come across a number of cases where people suffer from heart attacks or they fall ill suddenly. So there is no doubt that we should know some knowledge of first aid.The following are some tips we can follow to help these people on urgent occasions.

I really hope the tips above will make a difference to you.