Cách sử dụng
The word 'necessary' is used to describe something that is needed or required in a certain situation. For example, if you need to go to work, it is necessary to wake up early so you have enough time to get ready. It can also be used to express importance, such as "it is necessary to wear protective gear when playing contact sports to prevent injuries". Essentially, the word 'necessary' implies that something must be done or present in order for a certain outcome or goal to be achieved.