B2 Grammar: Essential Structures for Cambridge First

B2 grammar is less about collecting advanced rules and more about controlling familiar structures under pressure. At Cambridge B2 First, grammar appears directly in Open Cloze and Key Word Transformation, and it also affects the Language marks in Writing and the grammatical-resource assessment in Speaking.

The most efficient preparation therefore connects grammar study to output. Learn the rule, practise it in a focused exercise, then use it in a transformation, paragraph or spoken answer. If the structure never leaves the grammar worksheet, it is not yet exam-ready.

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Which grammar areas matter most at B2?

Prioritise structures that frequently help you express time, cause, contrast, possibility, deduction and hypothetical meaning:

• present perfect and past-time contrasts;
• future forms;
• second, third and mixed conditionals;
• modal verbs and modal deduction;
• passive voice;
• causative forms such as have/get something done;
• defining and non-defining relative clauses;
• reported speech and reporting verbs;
• gerunds and infinitives;
• comparatives and emphasis;
• contrast and concession linkers;
• articles, quantifiers and dependent prepositions.

You can practise these areas in the B2 Grammar hub, but the goal of this guide is to show how to study them productively.

How should you learn conditionals at B2?

Do not memorise “first = real, second = unreal, third = past” and stop there. B2 tasks often test whether you can choose a conditional because of the time relationship and intended meaning.

Compare:

• If I have time, I’ll call you. — realistic future possibility.
• If I had more time, I’d learn Japanese. — hypothetical present/future.
• If I had left earlier, I wouldn’t have missed the train. — unreal past.
• If I had taken that job, I would live in London now. — past cause, present result.

The last example is mixed. The best way to learn it is a timeline: mark when the condition happened and when the result applies. That prevents mechanical tense matching.

A common error is placing would in the if-clause: If I would have known.... Build the correct pattern through retrieval: cover your notes and create three third conditional examples from prompts.

How do modal verbs of deduction work?

B2 candidates need to express degrees of certainty about present and past situations.

For present deduction:

• must be = strong positive conclusion;
• can’t be = strong negative conclusion;
• might/may/could be = possibility.

For past deduction:

• must have + past participle;
• can’t have + past participle;
• might/may/could have + past participle.

The key is not merely the modal. You must preserve time. If the evidence concerns yesterday, must be is normally the wrong shape; you probably need must have been or another past participle construction.

Practise by reading a short situation and writing three conclusions with different certainty levels. This builds meaning before transformation technique.

What should you know about passives and causatives?

At B2, passive voice is useful because it lets you change focus:

People built the bridge in 1998. → The bridge was built in 1998.

For transformations, check three things:

1. keep the original tense;
2. use the correct form of be;
3. use the past participle accurately.

Causatives add another layer:

I repaired my phone means you did the repair yourself.

I had my phone repaired means another person did it for you.

That distinction appears frequently in real-life English and makes causatives worth mastering for Part 4.

Relative clauses: what causes the most mistakes?

The biggest B2 problems are punctuation and pronoun choice.

Defining clause: The student who sits near me is from Italy. The information identifies which student.

Non-defining clause: Maria, who sits near me, is from Italy. The information is extra and is separated by commas.

Do not use that in a non-defining relative clause. Also learn when the relative pronoun can be omitted: The book (that) I bought... is possible because the pronoun is the object; The person who called... cannot drop who because it is the subject.

When editing Writing, look for two simple sentences about the same noun and combine them with a relative clause. This turns grammar revision into a real organisation tool.

How should you study reported speech?

Reported speech is easier when you separate three decisions:

• pronouns: who is speaking about whom?
• time references: does today become that day in the new context?
• verb form: is backshift necessary and natural?

Then add reporting verbs. Instead of relying only on said and told, B2 learners should control patterns such as:

• advise someone to do something;
• warn someone not to do something;
• suggest doing something;
• apologise for doing something;
• deny doing something.

These verb patterns are high-value because they connect grammar and vocabulary and can appear in transformations.

Gerund or infinitive: how can you stop guessing?

Do not memorise one giant alphabetical list. Group verbs by useful patterns:

verb + -ing: avoid doing, consider doing, suggest doing.

verb + to-infinitive: decide to do, manage to do, refuse to do.

verb + object + to-infinitive: encourage someone to do, remind someone to do.

Then learn verbs where the pattern changes meaning, such as remember doing vs remember to do or stop doing vs stop to do.

Write paired examples that make the contrast obvious. Meaning-based contrasts are remembered better than abstract lists.

Which small grammar words matter in Open Cloze?

Some of the most valuable B2 grammar is visually unimpressive: articles, prepositions, auxiliaries and linkers. Open Cloze repeatedly rewards accurate handling of these building blocks.

Examples of useful patterns include:

• such + a/an + adjective + noun;
• so + adjective/adverb + that;
• despite/in spite of + noun or -ing;
• although/even though + clause;
• used to + base verb vs be used to + noun/-ing;
• neither...nor / either...or;
• dependent prepositions such as interested in, responsible for, capable of.

Your error log should capture the whole pattern, not only the missing word.

How do you transfer grammar into Writing?

Do not set a goal like “use complex grammar”. Set specific, realistic targets.

For one essay, aim to include:

• one accurate conditional;
• one relative clause;
• one contrast structure;
• one modal phrase for recommendation or possibility.

After writing, highlight them. If a structure sounds forced, remove it. Accuracy and appropriacy matter more than showing off.

Then rewrite one paragraph using a different grammatical choice. For example, replace two active sentences with one passive where the agent is unimportant. This builds flexibility rather than template dependence.

How do you transfer grammar into Speaking?

Speaking gives less planning time, so you need automatised patterns. Use short response frames as grammar practice:

• speculation: They might be..., perhaps because...
• comparison: Whereas the first situation..., the second...
• hypothesis: If people had access to..., they would probably...
• past experience: I’ve been doing... for...

Record 60-second answers and listen only for your target structure. If the same tense error occurs twice, create five rapid examples before recording again.

What is a useful weekly grammar routine?

That final mixed stage is essential. Real exams do not label the rule above the question.

Common B2 grammar mistakes worth fixing first

• using would in an if-clause where it does not belong;
• forgetting the past participle after modal perfect forms;
• using that after commas in non-defining relative clauses;
• confusing despite with although structures;
• mixing used to and be used to;
• choosing the right verb but wrong dependent preposition;
• forgetting tense agreement in passive transformations;
• learning grammar only through multiple-choice recognition.

Fix repeated errors before studying rarer grammar. Removing a mistake that appears every week is worth more than learning a structure you may never need.

Final takeaway

The B2 grammar you need is not hidden in obscure rules. It is the ability to control high-frequency structures accurately and choose them for meaning. Study fewer topics at a time, produce your own examples, connect each rule to Use of English and Writing, and test it later in mixed conditions. That is how grammar becomes usable rather than merely familiar.