B2 grammarPart 3 of 3

Dependent and Complex Prepositions: Build Reliable Word Partnerships

Some prepositions express a clear relationship. Others belong to a word partnership. At B2, accuracy grows when you learn the complete chunk and the grammar that follows it.

12-15 minutes4 guided tasks8-question mastery check
dependonresponsibleforsolutionto

What you will be able to do

UnderstandStore verb, adjective and noun patterns as complete chunks.
ChooseUse a noun, pronoun or -ing form after a preposition.
UseDistinguish prepositional phrases from conjunctions that introduce clauses.

Start with the meaning

Is the preposition carrying meaning, or completing a fixed partnership? Predict each answer, then open the explanation.

1. We are looking forward to meeting you. Why is it not to meet?

Here to is a preposition, not part of an infinitive. A preposition is followed by a noun, pronoun or -ing form.

2. Which is complete: discuss the issue or discuss about the issue?

Discuss the issue. Discuss takes a direct object in English and does not need about.

The essential distinctions

Learn the headword with its partner

Record the whole chunk, not an isolated preposition. Useful verb patterns include depend on, object to, succeed in, benefit from and apologise for.

The result depends on demand. · She succeeded in changing the policy.

Nouns and adjectives have patterns too

Common adjective patterns include aware of, capable of, responsible for. Noun patterns include reason for, increase in, solution to.

They are responsible for safety. · We need a solution to the delay.

The next grammar choice matters

A preposition takes a noun, pronoun or -ing form. A conjunction such as although or because introduces a clause.

Despite the delay / arriving late · Although we arrived late.

See the contrast

Headword or phrase Complete pattern Natural example
depend depend on + noun/-ing Success depends on preparing well.
object object to + noun/-ing Residents objected to closing the park.
responsible responsible for + noun/-ing Who is responsible for approving this?
solution solution to + noun We found a solution to the problem.
despite / in spite of preposition + noun/-ing Despite feeling tired, she continued.
although / because conjunction + clause Although she felt tired, she continued.

A three-step decision tool

Anchor the headwordAsk which verb, adjective, noun or phrase controls the pattern.
Retrieve the whole chunkSay responsible for, not merely for. Meaning alone may not predict it.
Inspect what followsAfter a preposition use a noun, pronoun or -ing. Use a conjunction before a full clause.

Three traps to avoid

✕ We discussed about the budget.
✓ We discussed the budget.

Discuss takes a direct object, with no preposition.

✕ She is responsible of recruitment.
✓ She is responsible for recruitment.

The adjective partnership is responsible for.

✕ I look forward to hear from you.
✓ I look forward to hearing from you.

The word to is a preposition here, so use -ing.

Guided practice

Say your answer aloud before opening the explanation.

1. Complete: The team succeeded ___ reducing waiting times.

in. Learn the chunk succeed in doing something.

2. Complete: There has been a sharp increase ___ demand.

in. The noun pattern is an increase in something.

3. Rewrite with despite: Although the evidence was limited, they made a decision.

Despite the limited evidence, they made a decision. Despite is followed by a noun phrase.

4. Complete: We apologised ___ not replying sooner.

for. Use apologise for + noun/-ing.

Final check

Mastery test

Target: 6/8

1. The outcome depends ___ how quickly we respond.

Why: The verb partnership is depend on.

2. She is capable ___ leading the project.

Why: The adjective partnership is capable of, followed here by -ing.

3. We need a practical solution ___ this recurring problem.

Why: The noun partnership is a solution to a problem.

4. Residents objected to ___ the library hours.

Why: In object to, to is a preposition and takes an -ing form.

5. Which sentence is correct?

Why: Discuss takes a direct object without a preposition.

6. ___ the heavy traffic, we arrived on time.

Why: Despite is a preposition and can be followed by the noun phrase the heavy traffic.

7. ___ the traffic was heavy, we arrived on time.

Why: Although is a conjunction and introduces the clause the traffic was heavy.

8. Which completion is natural?

Why: Use an increase in before the thing that becomes greater.