“Differentiating between ‘during’ and ‘while’ can help clarify the temporal relationships in a sentence. ‘During’ is used to indicate a period of time in which an event occurs. It often highlights the entire duration of an activity or event. On the other hand, ‘while’ is used when two actions happen concurrently or overlap, implying that they are simultaneous or occurring at the same time.

When using ‘during,’ the focus is more on the entire span of the event or activity. For example: ‘The phone rang during the meeting,’ indicates that the ringing happened throughout the meeting. Meanwhile, ‘while’ suggests a temporal overlap between two actions. For instance, ‘She sang while he played the guitar,’ illustrates that singing and playing the guitar were happening simultaneously.

In terms of expressing time in sentences, ‘during’ helps to establish a context for an event or activity by specifying the timeframe in which it occurs. Conversely, ‘while’ emphasizes the concurrency of actions, enhancing the understanding of simultaneous occurrences.

Overall, the usage of ‘during’ and ‘while’ impacts sentence structure by delineating the time relationship between actions, whether indicating a continuous period with ‘during’ or simultaneous actions with ‘while.'”