It refers to the complex expression of frequency, which needs to be combined with other words or phrases, such as "every other day", "every few years", "on the first and fifth of each month" and so on
events from the past to the future, which needs to be combined with other words or phrases, such as "in the first place", "in the second place", "finally" and so on
要点二
Simple chronological order It refers to the simple order of
events from the past to the future, so as "first," "second," "third," and so on
要点三
Complex chronological order It refers to the complex order of
Time period expression
Time period expression
It refers to the expression of a specific time period in the past, present or future, such as "a week ago", "in three months", "next year" and so on