Time expressions are words and phrases such as yesterday, last week, at 4 p.m., next Friday and by the end of the month. Consistency means that the time word and the verb form agree, and that the order of events is clear to the reader.
This lesson supports every point in an email and especially reasons that depend on when things happened. It is part of the email communication module.
Why do time mistakes matter?
An email often asks the reader to act, so the reader needs to know what has happened and what should happen next. A wrong time word can change the meaning: “I sent the form yesterday” and “I will send the form yesterday” give very different messages.
Consistent time also makes a short email feel organised. The reader can follow a clear line from past to present to future.
Which verb form goes with which time word?
| Time | Typical time words | Verb form | Example |
|---|---|---|---|
| Finished past | yesterday, last week, in 2024, two days ago | past simple | I sent the form last week. |
| Connected to now | already, yet, just, since, for | present perfect | I have not received a reply yet. |
| Planned future | tomorrow, next month, on Friday | will or present continuous | We will meet on Friday. |
| Fixed schedule | at 3 p.m., every Monday | present simple | The class starts at 3 p.m. |
How to check time in your own email, step by step
- Circle every time word in your draft.
- Underline the verb beside it.
- Match them using the table above.
- Check the order. Do the events move in a sequence the reader can follow?
- Check the deadline. If you ask for something, give a day or a date, not “soon”.
Worked example
Task written for this page: “You helped at a school charity run last Saturday. Write an email to a friend. Say what you did, how you felt and what you will do next year.”
Step 1, circle the time words in this draft:
Hi Amir, Last Saturday I help at the charity run. I gave water to the runners at 8 a.m. It is very tiring but I felt happy. Next year I join the run myself.
Step 2 and 3, underline verbs and match:
- “Last Saturday I help” needs the past simple: helped.
- “at 8 a.m. I gave” is already correct.
- “It is very tiring” refers to the past day, so: It was very tiring.
- “Next year I join” needs a future form: I will join (or I am going to join).
Step 4, corrected email:
Hi Amir,
Last Saturday I helped at the charity run. I gave water to the runners from 8 a.m. until 11 a.m. It was very tiring, but I felt happy because we raised money for the new library. Next year I will join the run myself, and I hope you will come with me.
Best wishes, Jia Wen
The reader now knows exactly what happened, how long it lasted and what comes next.
The mistake to watch for
A common slip is to use a past time word with a present perfect verb.
Mistaken draft: “I have visited the museum yesterday.”
The present perfect connects the past to now, but “yesterday” is a finished time. The two clash.
The correction is to choose one. Use the past simple with a finished time: “I visited the museum yesterday.” Or use the present perfect without a finished time: “I have visited the museum twice this year.”
Check yourself
1. Correct the verb: “I will call you yesterday.”
Show answer
“I called you yesterday.” The time word is past, so the verb must be past simple.
2. Which is correct? (a) “I already sent the form.” (b) “I have already sent the form.”
Show answer
(b) is the standard form in writing. Already usually goes with the present perfect when the action connects to now. Some speakers use (a), but (b) is the safer choice in an exam email.
3. Rewrite to give a clear deadline: “Please reply soon.”
Show answer
“Please reply by Thursday 14 March.” Any specific day or date is correct.
Where this leads next
With content, tone, reasons and time under control, try a full repair in revising an email that omits its main purpose. Then use the email communication practice set to test all five skills together. The writing revision compare view is useful for checking a draft before and after you correct its tenses.
Tense errors tend to cluster around one or two habits, and a teacher can find them quickly. Our online one-to-one English as a Second Language tuition is built around that kind of close reading.