Past tenses do not only describe past events. They also appear in conditional sentences, reported speech, and formal writing in ways that can be surprising and difficult to explain. In second conditional sentences, the simple past describes a present or future imagined situation, not a real past one. In third conditionals, the past perfect describes an imagined past. In reported speech, tenses shift back in time in a systematic way. In formal writing, past tenses are used with particular precision. Understanding these uses is what separates a teacher who can explain grammar deeply from one who can only teach the basics.
Before you start — think honestly about your own teaching and experience.
Look at the examples. Answer each question before reading the explanation — this is how your students will learn too.
Look at the three sentences. In each one, does the speaker think this situation is real, imagined in the present, or imagined in the past? Now look at the tenses. In the second conditional, the verb in the 'if' clause is simple past — but are we talking about the past?
This is one of the most important and most misunderstood points about past tenses in English. In the second conditional, simple past is used to describe an imagined present or future situation — not a real past one. 'If I had more time' does not mean 'if I had more time in the past' — it means 'if I had more time right now (but I don't).' The past tense creates what linguists call 'modal distance' — it moves the situation away from reality. This is why 'were' is used with all subjects in the second conditional: it signals that we are in the realm of imagination, not fact. Learners who understand this principle are much less likely to insert 'would' into the if-clause ('If I would have...' is a very common error).
Direct speech: She told us, 'We will have a test tomorrow.'
Reported speech: She told us that we would have a test the next day.
Direct speech: 'I have finished marking,' he said.
Reported speech: He said that he had finished marking.
Look at each pair. What has happened to the tense in the reported version? Is there a pattern?
In reported speech, tenses 'backshift' — they move one step back in time. Present simple becomes past simple. Will becomes would. Present perfect becomes past perfect. This backshifting happens because the reporting is taking place at a later moment in time than when the words were originally spoken. Not all speakers always backshift — especially in informal speech, or when the original statement is still true — but in formal writing and in teaching contexts, consistent backshifting is expected. Understanding the pattern makes it teachable: learners do not need to memorise each change individually if they understand the principle of 'one step back'.
Informal: 'She said she was going to tell the inspector.'
Formal minutes: 'The head teacher indicated that she intended to inform the inspector.'
What is different about the language in the formal versions? Are different past tenses used, or are the same tenses used in a more precise way?
In formal written English, past tenses tend to be used with greater precision. Writers are more likely to use past perfect to show the sequence of events clearly, and they avoid informal constructions such as 'going to' in favour of 'intended to' or 'was to'. The tenses themselves are often the same — but they are applied more carefully. Teachers who write reports, meeting minutes, or formal lesson plans need to be aware of these distinctions. The key shift is from 'what feels natural when speaking' to 'what communicates precisely and appropriately in writing'.
| Form | Use / Meaning | Example |
|---|---|---|
| Context | Tense used | What it means or does |
| Second conditional if-clause | Simple past (were for all persons) | Imagined present or future — not real now |
| Second conditional result | would + base form | The imagined result |
| Third conditional if-clause | Past perfect (had + past participle) | Imagined past — did not happen |
| Third conditional result | would have + past participle | The imagined past result |
| Reported speech: present to past | I am tired — she said she was tired | Backshift: present simple to past simple |
| Reported speech: will to would | I will come — he said he would come | Backshift: will to would |
| Reported speech: present perfect to past perfect | I have finished — she said she had finished | Backshift: present perfect to past perfect |
| Formal writing | Past perfect used more precisely; going to avoided | Sequence and causality made explicit |
WHY 'WERE' INSTEAD OF 'WAS' IN SECOND CONDITIONALS?
A very common question from learners and teachers alike is: why do we say 'If I were you' — isn't 'were' for plural? The answer is that 'were' here is a remnant of the English subjunctive mood — a special form used for hypothetical or wished situations. In modern everyday English, the subjunctive has mostly disappeared, but it survives in a few fixed expressions: 'If I were you', 'If she were here', 'I wish it were different.' In informal spoken English, 'was' is increasingly accepted: 'If I was you, I'd leave early.' However, in formal writing and in teaching contexts, 'were' is the standard recommended form for all persons in second conditionals. Teachers should know both forms and be able to explain why 'were' is not an error.
WHEN BACKSHIFTING IS OPTIONAL
In reported speech, backshifting is not always required. If the reported statement is still true at the moment of reporting, the original tense can be kept. For example, if a colleague said 'The school starts at 7 a.m.' and this is still true, it is acceptable to say 'She said the school starts at 7 a.m.' For teaching purposes, it is usually better to teach consistent backshifting first and then introduce the exception at a later stage.
MIXED CONDITIONALS
At advanced level, some learners may encounter mixed conditionals — sentences that combine a third conditional if-clause with a second conditional result. For example: 'If I had studied medicine, I would be a doctor now.' This is a real grammatical structure but it is complex. If learners ask about it, acknowledge it and return to it when appropriate.
KEY SELF-CHECK QUESTIONS In a conditional: - Is the if-clause about a real possibility? First conditional (if + present, will + base form). - Is it imagined or contrary to present reality? Second conditional (if + simple past, would + base form). - Is it imagined and about the past — something that did not happen? Third conditional (if + past perfect, would have + past participle). - Is 'would' in the if-clause? This is a common error — remove it. In reported speech: - Did you shift the tense back one step? Check: present becomes past, will becomes would, present perfect becomes past perfect. - Is the statement still true now? Backshifting may be optional. In formal writing: - Have you used past perfect where needed to show the sequence clearly? - Have you avoided informal forms like 'going to' in the past? - Are your tense choices precise and consistent?
Choose the correct form to complete each sentence.
Each sentence has one error. Write the correct sentence and explain the mistake.
Use this sequence directly in class — guided discovery, no textbook needed. Tap each step to mark it done.
STEP 1 — OPEN WITH A DILEMMA (5 minutes): Write this sentence on the board: 'If I were a student in this class, what would I find difficult?' Ask learners: 'Is this sentence about the past? Am I actually a student right now?' Let them discuss briefly. Establish that the simple past here describes an imagined, unreal situation — not a real past one. This is the central idea that unlocks much of this lesson.
STEP 2 — CONDITIONAL CONTRASTS (10 minutes): Write three conditional sentences on the board — one first, one second, one third. Ask learners to identify: (a) the tense in the if-clause, (b) the tense in the result clause, and (c) whether the situation is real, imagined present, or imagined past. Work through each one as a class. Focus especially on the third conditional and the 'would have + past participle' structure.
STEP 3 — REPORTED SPEECH CONVERSION (8 minutes): Say five sentences as if you are reporting what someone said at a meeting. Give the original direct speech first, then ask learners to produce the reported version. Focus on the tense changes. For example: 'She said: I am very tired.' becomes 'She said she was very tired.' Do this as a whole-class oral activity first, then ask learners to write two examples of their own.
STEP 4 — FORMAL VERSUS INFORMAL (7 minutes): Write two versions of the same information on the board — one informal, one formal. Ask learners to identify the tense differences and discuss why the formal version is more appropriate in written documents. For example: 'She was going to explain but had no time' (informal) versus 'She had intended to address the matter but was unable to do so within the time available' (formal). Ask learners to try converting one more informal sentence.
STEP 5 — APPLY AND CONSOLIDATE (10 minutes): Give each learner a scenario — for example, 'The school has no electricity.' They must write: (a) one second conditional sentence about it, (b) one third conditional sentence about it, and (c) one sentence as if reporting what someone said about it. Share and discuss as a class. Give clear, encouraging feedback on each tense form.
Use directly in class — copy, adapt, or read aloud. No printing needed.
For each strategy, choose the option that best describes where you are now.
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