Idiomatic Prepositions

Some verbs and adjectives always go with a particular preposition. These combinations are called idiomatic prepositions because they are fixed -- you must memorise them, since there is no rule to predict which preposition belongs with which word.

What You'll Learn

Common verb + preposition combinations: look at, listen to, wait for, talk to, and laugh at
Common adjective + preposition combinations: good at and afraid of
Why these prepositions cannot be swapped for other prepositions
How to choose the correct preposition in sentences and cloze passages

When to Use

When describing what someone is watching or viewing: "Please look at the whiteboard while the teacher is explaining."
When describing what someone is hearing on purpose: "We listen to our teacher during assembly every morning."
When describing what someone expects or stays for: "I will wait for you at the bus stop after school."
When talking about someone's ability: "My sister is good at drawing animals."
When describing a fear: "The little boy is afraid of the thunder during a storm."

How to Form

Verb + Preposition Combinations

These verbs always take a specific preposition. The meaning changes or becomes wrong if you use a different one.

Verb	Preposition	Meaning	Example
look	at	to direct your eyes towards something	She looked at the colourful poster on the wall.
listen	to	to pay attention to sounds or speech	He listens to music after finishing his homework.
wait	for	to stay until something or someone comes	We are waiting for the rain to stop.
talk	to	to speak with someone	She talked to her friend about the school trip.
laugh	at	to find something funny	The children laughed at the clown's tricks.
ask	for	to request something	He asked for a glass of water at the hawker centre.
belong	to	to be owned by someone	This pencil case belongs to my classmate.

Adjective + Preposition Combinations

Some adjectives also have a fixed preposition that always follows them.

Adjective	Preposition	Meaning	Example
good	at	skilful or able	He is good at solving Mathematics problems.
afraid	of	scared or fearful	Many children are afraid of the dark.
bad	at	not skilful	I am bad at remembering directions.

Pattern

The general pattern for these combinations is:

Verb + preposition + noun / pronoun / gerund (-ing word)

"She looked at the painting." (preposition + noun)
"He is waiting for her." (preposition + pronoun)
"They are good at swimming." (preposition + gerund)

Key Rules

Each verb or adjective has a fixed preposition: "Look" always takes "at", "listen" always takes "to", and "wait" always takes "for". You cannot swap them around.
Do not confuse "look at" with "look for": These have different meanings. "Look at" means to direct your eyes towards something. "Look for" means to search for something. "She looked at the picture" vs "She looked for her missing book."
Do not confuse "listen to" with "hear": "Listen to" means you are paying attention on purpose. "Hear" does not need a preposition. "I listen to the radio every morning" but "I heard a loud noise."
"Good at" is for abilities, not for behaviour: Use "good at" when talking about skills. "She is good at spelling." Do not say "She is good at being polite" -- just say "She is polite."
The preposition stays the same in all tenses: Whether the sentence is in the past, present, or future, the preposition does not change. "He looked at the stars" (past) and "He looks at the stars" (present) both use "at".
Use the -ing form when a verb follows the preposition: If an action word comes after the preposition, change it to its -ing form. "She is good at drawing" (not "good at draw"). "He is afraid of swimming" (not "afraid of swim").

Common Mistakes

Wrong	Right	Why
Look on the board, please.	Look at the board, please.	"Look" takes "at" when viewing something
She is listening at the song.	She is listening to the song.	"Listen" always takes "to"
We are waiting at our friends.	We are waiting for our friends.	"Wait" takes "for" when expecting someone
He is good in playing football.	He is good at playing football.	"Good" takes "at" for abilities, not "in"
The cat is afraid from the dog.	The cat is afraid of the dog.	"Afraid" always takes "of"
She is good at swim.	She is good at swimming.	A verb after a preposition must be in the -ing form

Clue Words

Preposition "at"

look, good, bad, laugh -- these words take "at"

Preposition "to"

listen, talk, belong -- these words take "to"

Preposition "for"

wait, ask -- these words take "for"

Preposition "of"

afraid -- this word takes "of"

Tip: Think of it this way -- you look at a target, you listen to a sound, and you wait for something to come. Picture the action in your head and the preposition will feel natural!

Practice Tips

Match and memorise: Write each verb or adjective on one side of a card and its preposition on the other side. Test yourself until you can say the pair without thinking.
Fill-in practice: Cover the preposition in the example sentences in this lesson and try to fill in the correct one from memory. Check your answer straight away.
Spot the pair in reading: When you read a storybook or a passage, look out for verb + preposition combinations. Underline them and add them to your card collection.
The swap test: If you are unsure which preposition to use, try reading the sentence with a different preposition. Does "listen at" or "wait to" sound right? If it sounds strange, the preposition you first thought of is probably correct.

Quick Reference

Word	Preposition	Memory Hint	Example
look	at	You aim your eyes at something	look at the map
listen	to	Sound travels to your ears	listen to the announcement
wait	for	You stay for someone to arrive	wait for the bus
talk	to	Your words go to a person	talk to the librarian
laugh	at	You point your laughter at something funny	laugh at the joke
ask	for	You reach out for what you need	ask for help
belong	to	Ownership goes to a person	belong to my brother
good	at	Think of aiming at a target (skill)	good at singing
afraid	of	You run away from (of) what scares you	afraid of heights
bad	at	Same pattern as "good at"	bad at cooking

Idiomatic Prepositions (P4) (Primary 4)