Final answer:
The phrase 'has isday' can apply to weather patterns and language usage in English.
Step-by-step explanation:
There are two different situations where the phrase 'has isday' applies. First, 'has isday' can be used to describe weather patterns. For example, if you say, 'It has been a sunny day,' you are indicating that the weather has been sunny throughout the day. Second, 'has isday' can also be used in situations related to grammar and language usage. For instance, if you say, 'He has been studying all day,' you are saying that he has been continuously studying for the entire day.