when的意思是什么_时间

【when的意思是什么】When refers to the specific time or moment in which something occurs. It is commonly used as a temporal reference in various contexts. As a conditional adverb, it introduces a condition and implies a subsequent consequence.
In programming, “when” is often utilized to define conditional statements, providing a specific action to be executed when a particular condition is met.

Examples:
– When the temperature exceeds 30 degrees Celsius, activate the air conditioning.
– When the user clicks the button, display a popup window.

When can also be employed as a subordinating conjunction in complex sentences. It helps to establish dependent clauses that indicate a specific point in time as the context for the main clause.