We use 'for' to say why we do something or what something is for. It shows the aim or reason clearly.
This gift is for you.
I study hard for exams.
We use 'for' when we talk about a person or group who gets something or is helped by an action.
I bought a book for my friend.
She cooked dinner for her family.
'For' shows how long something lasts. It mentions time from start to finish.
She lived there for two years.
We waited for an hour.
Use 'for' to explain what something is made or used for. It shows the object’s function.
This cup is for tea.
The key is for the door.
'For' is used to compare or give an opinion by showing a difference from what is usual or expected.
For a child, he is very tall.
The city is quiet for a big place.
Here, 'for' shows that one thing is given or done instead of another thing.
I work for my brother today.
She bought apples for oranges.
'For' shows that someone supports or agrees with someone or something.
I am for your idea.
She voted for the new law.
'For' appears in many idioms and phrases where it shows cause or reason, often linking two ideas.
Thank you for your help.
He is known for his honesty.
