We use for to talk about a purpose or a reason for something: I’m going for some breakfast. I’m really hungry. She leaves on Friday for a 15-day cruise around the Mediterranean. I wear these old trousers for painting.

The word for can be used as a preposition and a conjunction. As a preposition, it is followed by a noun. Let’s buy some flowers for mummy. I waited for hours, but she didn’t come. As a conjunction, for is used to connect two clauses. A for-clause usually shows cause/reason. I asked him to turn the music down, for I wanted to sleep.

“For” has many different uses, including: Indicating who should to have something (e.g., I have good news for you!) A reason or cause (e.g., I couldn’t see the horizon for the fog.) Illustrating a span of time or distance (e.g., The road is straight for miles.) Meaning “On the occasion of” (e.g., She got a new car for her birthday.)

For in a sentence as a conjunction, is truly a game changer when it comes to its usage in English grammar; it helps to connect words phrases, and clauses in sentences. For instance, “She was going to like the clothes he bought for the trip.” But, apart from functioning as a conjunction, sometimes it can also work as a preposition or adverb.