I. General Time Expressions:

• Now: The present moment.

• Later: At a future time.

• Soon: In a short time.

• Always: At all times; on every occasion.

• Never: Not at any time.

• Sometimes: On certain occasions; not always.

II. Past Time Expressions:

• Yesterday: The day before today.

• Last week/month/year: The week/month/year before the current one.

• In the past: Referring to any time before the present.

III. Future Time Expressions:

• Tomorrow: The day after today.

• Next week/month/year: The week/month/year following the current one.

• In the future: Referring to any time after the present.

IV. Specific Time Expressions:

• At [time]: Referring to a specific time (e.g., at 9 o'clock).

• In [time period]: Referring to a general time frame (e.g., in the morning, in the evening).

• On [day/date]: Referring to a specific day or date (e.g., on Monday, on the 25th of March).

V. Duration Expressions:

• For [period of time]: Referring to a specific length of time (e.g., for two hours, for a month).

• During [event]: Referring to a time period that coincides with a particular event (e.g., during the summer, during the meeting).

VI. Time-related Adverbs:

• Always: At all times; on every occasion.

• Frequently: Often; on a regular basis.

• Occasionally: Sometimes; infrequently.

• Rarely: Not often; seldom.

• Usually: Generally; most of the time.

Remember to practice using these vocabulary words in sentences and conversations to improve your understanding and fluency in English.