Use of For in Sentence

Hi ! 😊 Great question! The word "for" has many uses, but here are some simple ways to understand it:

1️⃣ To show purpose or reason

•  I bought a gift for my friend. (The reason = for my friend)
• This pen is for writing. (The purpose = for writing)

2️⃣ To indicate duration (how long something happens)

•  We waited for an hour.
• She studied for three hours.

3️⃣ To express benefit or who something is meant to help

•  This book is for children.
•  Exercise is good for your health.

4️⃣ To show an exchange or replacement

•  I paid $10 for this sandwich.
•  She swapped her apple for an orange.

5️⃣ To express support or agreement

•  I am for the new school project. (I support it!)
•  Are you for or against the plan?

I hope this helps! Let me know if you need more examples.