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文法
Prepositions and particles B1 B2 C1

Preposition patterns

Learn how common verbs, adjectives, and nouns choose prepositions and how prepositions take noun or -ing complements.

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図解ガイド

The preposition socket

Think: a word has a preposition socket.

[partner word] --chosen PREP--> [complement]
 verb / adjective / noun           noun phrase OR -ing

Verb socket:
depend --on--> reliable data
We depend on reliable data.

Adjective socket:
interested --in--> learning more
I'm interested in learning more.

Noun socket:
solution --to--> this problem
We need a solution to this problem.

After a preposition, use -ing for an action:
I'm looking forward to seeing you.

Learn the partner word + preposition together; the preposition then needs a noun phrase or an -ing form.

Introduction

Prepositions as word partners

Many English words prefer a particular preposition after them. A verb, adjective, or noun often opens a slot: depend on something, interested in something, reason for something. The slot is part of the pattern, not a word-by-word choice. Learn the whole connection with a useful complement: wait for the bus, good at solving problems, solution to a problem. This lesson focuses on which words choose a preposition, what kind of complement the preposition can take, and where common confusions happen.
Core 文法：B1 語彙：A2 Neutral

We depend on reliable data.

Depend is learned with on, not as a verb alone.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

depend on
verb plus required preposition
Depend normally connects to its complement with on.
ひとまとまりで覚える
reliable data
noun complement
A noun phrase can complete the preposition pattern.
Cognitive metaphor

The connector socket

Think of a preposition pattern as a connector socket. The first word gives the main meaning, and the preposition shows how the next idea attaches. A socket is not always predictable from meaning: listen normally connects with to, apply with for, and depend with on. Some prepositions still carry a useful direction of thought: for often points to a purpose, target, or reason; on often shows support, effect, or topic; to often points to a person, destination, or solution. Use the metaphor to remember patterns, but check real usage.
Core logic

Prepositions need complements

A preposition is not normally the end of the pattern. It needs a complement: a noun phrase, a pronoun, or an -ing form. That is why English uses patterns like interested in the idea, interested in it, and interested in learning more. Do not put an infinitive directly after a real preposition: use before making a decision, not before to make a decision. The word to can be a preposition or an infinitive marker, so look at the whole pattern, not the word alone.
Core 文法：B1 語彙：A2 Neutral

Before making a decision, check the dates.

Prepositions can take -ing clauses as complements.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

Before making a decision
preposition plus -ing complement
Before is followed by an -ing form when an action follows it.
ひとまとまりで覚える
check the dates
main instruction
The main clause gives the action to do.
Core pattern

Verb plus preposition patterns

Common verbs select different prepositions. Many are best learned as whole verb-preposition chunks: depend on, listen to, wait for, apply for, apologize to someone for something. The preposition may introduce the object, the person affected, or the reason. Some verbs have more than one pattern with a meaning change or focus change: agree with a person or idea, but agree to terms or a plan. When you learn a new verb, record the pattern with a typical complement, not only the verb.
Question 文法：B1 語彙：A1 Neutral

Can you listen to me for a minute?

Listen to is a common verb-preposition pattern.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

Can you
question opener
A common way to make a polite request or question.
listen to
verb plus required preposition
Listen normally needs to before the person or thing heard.
ひとまとまりで覚える
for a minute
time phrase
For can introduce a length of time.
Core 文法：B1 語彙：A1 Neutral

I'm waiting for the bus.

Wait for is a high-frequency verb-preposition chunk.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

waiting for
verb plus required preposition
Wait connects to the expected person or thing with for.
ひとまとまりで覚える
the bus
noun complement
The noun phrase completes the preposition pattern.
Negative 文法：B1 語彙：A2 Neutral

She didn't apply for the job.

Negatives do not remove the required preposition.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

didn't apply for
negative verb pattern
The negative form still keeps the verb-preposition pattern apply for.
ひとまとまりで覚える
the job
noun complement
The noun phrase completes for.
Core 文法：B2 語彙：B1 Neutral

He apologized to Maya for the delay.

Some verbs can take two prepositional phrases with different roles.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

apologized to
verb plus person preposition
Apologize to introduces the person who receives the apology.
ひとまとまりで覚える
for the delay
reason phrase
For introduces the reason for the apology.
Form variations

Adjective and noun patterns

Adjectives and nouns also choose prepositions. Adjectives often describe a feeling, skill, attitude, or responsibility: interested in, good at, worried about, responsible for. Nouns often package a relationship between two ideas: reason for, solution to, effect on, increase in. The preposition belongs to the noun or adjective pattern, so changing it can sound unnatural or change the meaning. Learn the pattern together with the grammar after it: good at doing something, responsible for doing something, a solution to a problem.
Core 文法：B1 語彙：A2 Neutral

I'm interested in learning more.

Adjective-preposition patterns can take -ing complements.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

interested in
adjective plus required preposition
Interested normally connects to its object or activity with in.
ひとまとまりで覚える
learning more
-ing complement
After the preposition in, use an -ing form for an action.
Core 文法：B1 語彙：A2 Neutral

They're good at solving problems.

Skill adjectives commonly use at plus a noun or -ing form.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

good at
adjective plus required preposition
Good uses at before a skill or activity.
ひとまとまりで覚える
solving problems
-ing complement
The -ing phrase names the activity or skill.
Question 文法：B1 語彙：B1 Neutral

Are you worried about the deadline?

Many emotion adjectives select a specific preposition.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

Are you
question opener
A common question frame with an adjective.
worried about
adjective plus required preposition
Worried connects to the cause of worry with about.
ひとまとまりで覚える
the deadline
noun complement
The noun phrase names the thing causing worry.
Formal 文法：B2 語彙：B1 Formal

She is responsible for training new staff.

Responsible for is common in work and formal contexts.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

responsible for
adjective plus required preposition
Responsible uses for before the duty, person, or activity.
ひとまとまりで覚える
training new staff
-ing complement
The -ing phrase names the duty.
Core 文法：B1 語彙：A2 Neutral

There is a clear reason for the change.

Nouns can control preposition patterns, just like verbs and adjectives.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

There is
existence frame
This frame introduces a noun phrase.
reason for
noun plus required preposition
Reason normally uses for before the thing being explained.
ひとまとまりで覚える
the change
noun complement
The noun phrase completes the pattern.
Core 文法：B1 語彙：A2 Neutral

We need a solution to this problem.

Solution to is a common noun-preposition pattern.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

solution to
noun plus required preposition
Solution commonly uses to before the problem.
ひとまとまりで覚える
this problem
noun complement
The noun phrase names what the solution is for.
Formal 文法：B2 語彙：B1 Formal

The decision had a serious effect on costs.

Effect on is useful for explaining results and consequences.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

effect on
noun plus required preposition
Effect commonly uses on before the thing affected.
ひとまとまりで覚える
Formal 文法：B2 語彙：B1 Formal

There was a sharp increase in prices.

Increase in is common in reports and data descriptions.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

There was
existence frame
This frame introduces a situation or change.
increase in
noun plus required preposition
Increase often uses in before the thing that rises.
ひとまとまりで覚える
Sentence xray

X-ray the pattern

To read a sentence with a preposition pattern, find the head word, the preposition, and the complement. In the pattern responsible for training new staff, the head word is responsible, the preposition is for, and the complement is the -ing phrase training new staff. In the noun pattern solution to this problem, solution controls the preposition to, and this problem completes it. This X-ray helps you avoid guessing. If the complement is an action after a preposition, use -ing.
Contrast

The nearest traps

The closest confusions are patterns that look similar but use different grammar. Discuss is a direct-object verb, so it does not take about; talk is different and normally takes about for a topic. Looking forward to is not the same as want to. In looking forward to seeing you, to is a preposition and must be followed by -ing. In want to see you, to is an infinitive marker and is followed by the base verb. Learn these contrasts as separate patterns, not as one rule for the word to.
Mistake 文法：B1 語彙：A2 Neutral

I'm looking forward to see you.

In looking forward to, to is a preposition, so an infinitive is not used after it.

Corrected 文法：B1 語彙：A2 Neutral

I'm looking forward to seeing you.

Use looking forward to plus -ing.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

looking forward to
fixed adjective-like expression plus preposition
In this expression, to is a preposition.
ひとまとまりで覚える
seeing you
-ing complement
After the preposition to in this pattern, use an -ing form.
Contrast 文法：B1 語彙：A1 Neutral

I want to see you soon.

This contrasts infinitive to with preposition to.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

want to see
verb plus infinitive
Here to marks an infinitive, so it is followed by the base verb see.
ひとまとまりで覚える
Mistake 文法：B1 語彙：A2 Neutral

We discussed about the plan.

Discuss is normally followed by a direct object, not about.

Corrected 文法：B1 語彙：A2 Neutral

We discussed the plan.

Use discuss plus a direct object.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

discussed the plan
verb plus direct object
Discuss takes the topic as a direct object with no preposition.
ひとまとまりで覚える
Contrast 文法：B1 語彙：A2 Neutral

We talked about the plan.

Talk about contrasts with discuss plus direct object.

意味のかたまり

単語ごとではなく、意味のかたまりで文を読んでみましょう。

talked about
verb plus topic preposition
Talk normally uses about before a topic.
ひとまとまりで覚える
the plan
noun complement
The noun phrase names the topic.
Danger zone

Boundaries and exceptions

Do not assume that one preposition works everywhere. English often uses fixed patterns, and small changes can change meaning: agree with a person or opinion, agree to a condition; arrive at a small place, arrive in a city or country. Also notice verbs that do not need a preposition in standard use, such as discuss the plan, enter the room, and reach the airport. If you are unsure, search or record the word with its usual partner and complement.
Summary

What to remember

Use three checks. First, ask what word controls the pattern: verb, adjective, or noun. Second, learn the preposition with a useful complement: depend on data, good at solving problems, a reason for the change. Third, check the form after the preposition: noun phrase, pronoun, or -ing, not infinitive. Contrasts matter because similar meanings do not guarantee the same pattern. Talk about a topic, but discuss a topic. Look forward to seeing someone, but want to see someone.
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