连词 - 时间连词

used to say that something is happening at the same time with another

当...时

used to indicate that two things happen at the same time or during something else

当...时

at any or every time

无论何时

used to indicate a period of time during which an action takes place or a state of affairs exists, often denoting simultaneous or concurrent events

当...时

from a time in the past until a particular time, typically the present

自从

used to denote a continuous period of time starting from a particular event or point in the past and continuing until the present or a specified time

自从

while something else is happening

在...的时候

used to express that something happens at the same time or right after another thing

一旦

used to describe a duration or period of time during which something happens or continues to be true

只要

used to describe a duration or period of time during which something happens or continues to be true

只要

used to indicate a point in time before which an action or event has occurred or will occur

到...的时候

used to emphasize the present moment in relation to the topic under discussion

此时此刻

used to express the idea of something happening or being done at the appropriate or necessary times

根据需要

used to indicate simultaneous action to show that one action or situation occurs at the same time as another

即使在

used to indicate that if certain conditions or situations occur, certain actions or responses will follow

如果和何时