Talking accurately about Society often means describing both ongoing situations and finished past events, so this lesson focuses on the key grammar point of the unit: how to choose correctly between the Present Perfect and the Past Simple when discussing social changes, community actions, and personal experiences.
Present Perfect vs Past Simple: Rules and Uses
The Present Perfect (have/has + past participle) connects the past to the present: we use it for unfinished time periods, life experiences, and past actions whose results matter now. The Past Simple (verb + -ed, or irregular form) is used for actions that are completely finished and happened at a specific, stated time in the past. Compare the two uses below.
| Use | Tense | Example |
|---|---|---|
| An action that started in the past and continues now, or a period of time that is not finished (this week, today, so far) | Present Perfect | Our community has organised three charity events this year. |
| A life experience, without saying exactly when it happened | Present Perfect | I have visited a homeless shelter twice. |
| A past action whose result is important in the present | Present Perfect | The city has built a new community centre, so residents now have a place to meet. |
| An action that happened at a specific, finished time in the past | Past Simple | The council opened the new shelter in 2019. |
| A completed action or situation with no connection to the present | Past Simple | My grandparents grew up in a small, close-knit village. |
| A sequence of finished past events, often in a story | Past Simple | The volunteers arrived, set up the tents, and welcomed the families. |
Time Markers for Each Tense
Certain time markers signal which tense to use. Words like ever, never, just, already, yet, so far, since, for, and recently usually go with the Present Perfect, because they refer to an unfinished period or do not give a precise past date. Words like yesterday, last week, last year, in 2020, two days ago, when I was a child, and at that time go with the Past Simple, because they name a specific, finished moment.
- Present Perfect: Have you ever volunteered for a charity? – I have already read that article about social inequality. – We haven’t finished the project yet. – She has lived here since 2015.
- Past Simple: The charity was founded in 2010. – We discussed social inequality yesterday. – He moved to the city two years ago. – Last month, the town organised a food drive.
Practice Exercises
Exercise 1 — Choose the correct form: ‘The association (opened / has opened) its doors in 2012 and it is still helping families today.’
Exercise 2 — Put the verb in brackets into the correct tense: ‘I ______ (never / visit) a refugee camp.’
Exercise 3 — Correct the mistake in this sentence: ‘She has moved to this neighbourhood in 2018.’
Exercise 4 — Complete with Past Simple or Present Perfect: ‘They ______ (already / collect) enough donations for the shelter this month.’
Exercise 5 — Write one sentence about a social project using the Present Perfect with ‘since’ or ‘for’.
Exercise 6 — Explain why we use the Past Simple, not the Present Perfect, in the sentence: ‘The city built the community centre in 2005.’
Answer Key
Answer 1 — has opened
Answer 2 — have never visited
Answer 3 — She moved to this neighbourhood in 2018. (Past Simple is correct because ‘2018’ is a specific, finished past time.)
Answer 4 — have already collected
Answer 5 — Answers will vary. Example: ‘Our club has supported local families for three years.’
Answer 6 — Because ‘2005’ is a specific, finished point in the past, so the action is completely over and not connected to the present in the way the Present Perfect would suggest.
