What do the four new B1 lessons cover?

One past tense and three uses of modal verbs: the past perfect for sequencing two past events (had + past participle), modals of possibility (may/might/could) for saying how likely something is, modals of deduction (must/can't/might) for drawing logical conclusions from evidence, and the present and past simple passive for shifting focus from the doer to the action.

What is the past perfect and when do I use it?

The past perfect (had + past participle) flags the earlier of two past events: *When I arrived, she had already left.* You use it whenever you need to be clear about the order of past actions — especially with connectors like *before*, *after*, *by the time*, and *when*. With *before* and *after* the order is often already clear, so you can use the past simple instead.

What is the difference between may, might, and could for possibility?

*May* suggests something is fairly possible — you have a reason to think it could happen. *Might* has a similar meaning but often sounds slightly more tentative or uncertain. *Could* frames something as a theoretical option worth considering rather than a genuine prediction. In everyday speech, *might* and *could* are often interchangeable.

How do must, can't, and might work for present deductions?

*Must* expresses near-certainty that something is true based on evidence: *She's worked here for years — she must know the answer.* *Can't* expresses near-certainty that something is NOT true: *That can't be right — I checked the figures myself.* *Might* leaves the question genuinely open: *They might be stuck in traffic.* None of these are commands or permissions — they're logical conclusions.

How do you form the present and past simple passive?

Present passive: subject + am/is/are + past participle → *Coffee is grown in Brazil.* Past passive: subject + was/were + past participle → *The bridge was built in 1920.* The passive is used when the doer is unknown, unimportant, or less relevant than the action or result. Add *by + agent* only when the agent matters.

English B1 Part 3: Past Perfect, Modals, and the Passive

The third batch of B1 lessons is live. Two lessons build out your modal toolkit — expressing uncertainty and reasoning from clues — one adds a new past tense for sequencing events, and one opens up the passive voice.

Four new B1 lessons are open. Together they round out a theme: seeing situations from different angles — what's possible, what can be logically concluded, what happened first, and who (or what) receives the action.

🆕 Four New B1 Lessons

Past perfect — showing which of two past events happened first
Modals of possibility — using may, might, and could to say how likely something is
Modals of deduction: present — using must, can't, and might to reason from evidence
The passive: present & past — shifting focus from the doer to the action or result

👉 All four are on the English B1 learning path.

⏪ Past Perfect

You already know the present perfect (I've finished) and the past simple (I finished). The past perfect adds a third level: the earlier of two past events.

When I arrived at the party, Maria had already left. — she left first, then I arrived. Without the past perfect, When I arrived, Maria left sounds like both happened at the same moment.

The form is always had + the past participle — and had never changes. The usual time words are already, just, never, before, after, by the time, and when.

He had never seen snow before he moved to Canada. — the never-seeing came before the moving. By the time we got there, the concert had already started.

A useful shortcut: with before and after, the order of events is already clear, so you can often use the past simple. She left before I arrived is fine without the past perfect. But when the order might be ambiguous or you want to stress it, the past perfect is the precise choice.

👉 Past perfect covers the full form, negatives and questions, the common adverbs, all the time connectors, and how to tell it apart from the present perfect.

🤔 Modals of Possibility: May, Might, Could

When you're not sure whether something is true or will happen, English gives you three modals: may, might, and could. They all express possibility — the difference is mainly in how certain you sound.

It may rain later. (fairly possible — you're watching the clouds) She might be at home. (possible, but you're genuinely unsure) That could be the answer. (a theoretical option worth considering)

All three follow the same modal pattern: the modal never changes form, and the verb after it is always the plain base form — no to, no -s, no -ed.

For ongoing possibilities, use may/might/could + be + verb-ing: He might be sleeping. She could be working late.

For negatives: may not and might not (or mightn't) keep the possibility but deny it; couldn't shades into near-certainty that something is impossible (closer to deduction). In questions, may sounds very formal — might and could are far more natural: Could this be the problem?

👉 Modals of possibility works through all three with side-by-side comparisons, negatives, questions, the continuous form, and the most common mix-up with can.

🔍 Modals of Deduction: Present

Sometimes you don't know something for sure, but you can reason from the evidence in front of you. That's deduction — and for present deductions, English uses must, can't, and might.

Modal	What it signals	Example
must	near-certainty that it IS true	She must be* tired — she's been up since 5 a.m.*
can't	near-certainty that it is NOT true	He can't be* serious — that's impossible.*
might	genuine uncertainty — could go either way	The lights are off — she might be* asleep.*

These are logical conclusions, not permissions or commands. She must be tired means I'm almost certain she's tired — it's different from the obligation must in You must be home by ten.

For ongoing actions, switch to the continuous form: must/can't/might + be + verb-ing — He must be joking. They can't be serious. She might be waiting outside.

The big contrast to keep straight: must (deduction) vs must (obligation). Context almost always makes it clear — You must wear a seatbelt is an obligation; You must be cold is a deduction from visible evidence.

👉 Modals of deduction: present covers the full form and nuances, the continuous form, how to tell must (deduction) from must (obligation), and how to contrast with can't and might.

🔄 The Passive: Present & Past

In an active sentence, the subject does the action: Maria wrote the letter. In a passive sentence, the subject receives the action: The letter was written by Maria. The focus shifts from the doer to the thing that was acted on.

Three common reasons to use the passive:

The agent is unknown: My phone was stolen last night.
The agent is obvious or unimportant: She was born in 1998. English is taught in schools worldwide.
The result matters more than the doer: The bridge is inspected every year.

Present passive: subject + am / is / are + past participle → Coffee is grown in Brazil. These shoes are made in Italy.

Past passive: subject + was / were + past participle → This bridge was built in 1920. The concerts were cancelled.

When you want to name the agent, add by + agent at the end: The report was written by the director. Leave the by-phrase out when the agent is unknown or unimportant.

The trickiest part is the past participle: regular verbs just add -ed (check → checked), but irregular verbs have a separate third form (write → written, break → broken, make → made).

👉 The passive: present & past covers why the passive exists, both forms, how to add the by-phrase, negatives, questions, and the most common mistakes (was break instead of was broken, dropping was/were, dangling by).

🆓 Free and Open

All four lessons are free to read — no account, no login, no paywall. Each ends with a quick check so you can test yourself straight away.

⭐ Keep Going

👉 Open the English B1 learning path and continue where you left off.