PTE Core Grammar Rules for the Blanks

PTE Core does not test all of English grammar. The Fill in the Blanks tasks recycle a narrow set of structures, and the three written tasks are marked on accuracy in the same structures. That is a closed set of about a dozen rules, which is why grammar is the fastest thing to fix in a PTE Core preparation.

Each rule below is a decision, not an explanation.

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Key Takeaways

• The Fill in the Blanks tasks are half grammar and half collocation.
• Decide what the gap needs from its position before reading the options.
• A blank after a preposition is a noun or gerund, never a bare verb.
• A clause after the blank needs a conjunction; a noun phrase needs a preposition.
• The same rules are marked in Write Email and both summary tasks, so grammar work pays three times.

Rule 1: word form is decided by position

Position of the gap	Needs	Example
After an article or possessive, nothing after it	Noun	the completion of the work
Between article and noun	Adjective	the primary driver
After a complete clause	Adverb	completed successfully
Before a comparative adjective	Adverb	considerably greater
After a linking verb (look, seem, appear, become)	Adjective	looks optimistic
After a subject with no other verb	Finite verb	Sales rose sharply

If the four options are four forms of one word, the meaning is identical and only position decides.

Rule 2: what follows an auxiliary

Before the gap	Gap needs	Example
have / has / had	Past participle	have established
is / are / was / were	Past participle or adjective	are obliged to revalue
can / will / must / should	Bare infinitive	can register higher cover
is / are + being	Past participle	is being replaced
to	Bare infinitive, or a noun after “to” as a preposition	to confirm / access to funding

Rule 3: prepositions take nouns and gerunds

Structure	Correct	Wrong
after + gap	after submitting the report	after submit the report
for + gap	for approval	for approve
without + gap	without notice	without notify
by + gap	by combining parcels	by combine parcels
in + gap	in accordance with	in accord with (different phrase)

No bare infinitive ever follows a preposition. This rule alone resolves several blanks per test.

Rule 4: conjunction or preposition

Followed by a clause (subject + verb)	Followed by a noun phrase	Relationship
because	because of / due to / owing to	Cause
although / even though / whereas / while	despite / in spite of	Contrast
when / while / once / as soon as	during	Time
so that	for / in order to + verb	Purpose
if / unless	in the event of	Condition

Look right of the gap. Subject plus verb means conjunction; a bare noun phrase means preposition. “However” cannot join two clauses inside one sentence, which is why it is a common wrong option.

Rule 5: subject-verb agreement

Structure	Verb agrees with	Example
Subject + prepositional phrase	The subject	The list of suppliers is published
Each / every / either / neither + noun	Singular	Every applicant receives a reply
A number of…	Plural	A number of staff have applied
The number of…	Singular	The number of complaints has fallen
Either A or B	The nearer noun	Either the managers or the director signs
Collective nouns (team, board, staff)	Usually singular	The board meets monthly

Rule 6: tense is decided by the time marker

Marker in the sentence	Tense	Example
yesterday, last year, in 2019, ago	Past simple	The store opened in 2019
since, for + period, so far, already	Present perfect	Rates have risen since March
by + future time, next month	Future or future perfect	We will have finished by Friday
currently, at present, this week	Present continuous	They are reviewing the terms
every day, usually, generally	Present simple	The shuttle runs hourly
when / after / once + future meaning	Present, not future	as soon as the shipment arrives

Rule 7: active or passive

Test	Result	Example
An object follows the gap	Active	The team submitted the report
No object; the subject receives the action	Passive	The report was submitted
“by” plus an agent appears	Passive	combined and delivered by one vehicle
The verb cannot take an object (arrive, rise, occur)	Never passive	The delay occurred on Monday

Rule 8: participles as modifiers

Form	Meaning	Example
-ing	The noun does it	the rising costs
-ed	It is done to the noun	the approved budget
-ing at the start of a clause	Same subject as the main clause	Reviewing the file, she found the error
-ed at the start	Passive, same subject	Approved in May, the plan began in June

Test with the noun: costs rise by themselves, so -ing. A budget is approved by someone, so -ed.

Rule 9: comparatives

Structure	Form	Example
“than” anywhere in the sentence	Comparative	lower than the budget assumes
Three or more items	Superlative with “the”	the largest share
Equality	as + base form + as	as accurate as last year
Intensifying a comparative	much / far / slightly / considerably	considerably higher

“Very” cannot modify a comparative. “Very higher” is always wrong.

Rule 10: countable and uncountable

Noun type	Use	Do not use
Countable plural	many, few, several, a number of	much, little, an amount of
Uncountable	much, little, a great deal of, an amount of	many, few, a number of
Either	some, any, a lot of, plenty of	—
Common uncountables in PTE texts	information, research, evidence, equipment, funding, advice, feedback	Never “informations”, “researches”, “evidences”

Rule 11: articles in Write Email and summaries

Situation	Article	Example
First mention, countable singular	a / an	I have attached a revised invoice.
Second mention of the same thing	the	The invoice replaces the earlier version.
Unique or already identified	the	The deadline has been extended.
General plural or uncountable	No article	Expenses are reimbursed monthly.
Job title after “as”	a / an	I work as a coordinator.

Article errors are the most frequent accuracy loss in Write Email, and the rule above covers almost all of them.

Rule 12: what Write from Dictation needs

Reconstruct	By
Missing auxiliary	“been” implies has been or have been — check the subject
Missing article	First mention takes a or an; already-identified takes the
Verb ending	A plural subject takes no -s
Preposition	Decided by the noun: in a month, on a date, at a time
Plural on a noun you half-heard	Check the verb: “figures have” needs a plural

Every correct word carries a mark. Function words are the ones grammar lets you rebuild, so spend the audio on the content words and reconstruct the rest.

Decision checklist for any blank

1. Are the options four forms of one word? Word form — use position.
2. Four tenses of one verb? Find the time marker.
3. Four prepositions or connectors? Check whether a clause or a noun phrase follows.
4. Four different words of the same part of speech? Collocation, not grammar.
5. Is there an auxiliary before the gap? It fixes the form.
6. Is there a “than” anywhere? Comparative.
7. Still unsure? Choose the option that sounds right when you read the whole sentence, and move on. Every blank is one mark.

FAQ

Which grammar does PTE Core test?

A closed set: word form, verb tense, active and passive, subject-verb agreement, prepositions, connectors, participles, comparatives, countability and articles. Both Fill in the Blanks tasks recycle these, and the same rules are marked for accuracy in Write Email and the two summary tasks.

Is grammar or vocabulary more important for PTE Core?

Grammar first if you are below the mid-range, because it is a small closed set with immediate returns in the Fill in the Blanks tasks. Vocabulary and collocation are a much larger set with slower returns per hour studied.

How do I decide between a conjunction and a preposition?

Look at what follows the gap. A subject plus a verb needs a conjunction such as although or because; a bare noun phrase needs a preposition such as despite or because of. “However” cannot join two clauses within one sentence, which is why it appears so often as a distractor.

Does grammar affect my speaking score?

Not directly. Read Aloud and Repeat Sentence are scored on fluency and pronunciation rather than your own grammar, but Describe Image and Respond to a Situation produce your own sentences, although grammar is not one of their scored traits (content or appropriacy, pronunciation and fluency).

Which grammar error is most common in Write Email?

Articles — a missing “the” on a second mention, or “a” omitted before a job title after “as”. The rule is short and covers almost every case: first mention takes a or an, already-identified takes the, general plurals and uncountables take none.

Do I need to know irregular verbs?

For recognition, yes. The Fill in the Blanks options give you the forms, so you need to identify which is the past participle rather than produce it. Write from Dictation and the written tasks do require you to produce them correctly.

Related practice resources

• PTE Core collocation list
• PTE Core Reading and Writing Fill in the Blanks
• PTE Core Write Email templates

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