Beside the above mentioned 'but' has some other peculiar usages as a conjunction as follows: - It could be used after having made an excuse or apology for what you are about to say : " Excuse me ,but I think you have forgotten your wallet here." " Sorry, but it has nothing to do with you." -As an adverb it could also mean ' only': "This is but one of the ways you can use to solve the problem."

But is used as an exception or showing a different case~ first use: -He is Handsome but he is not my style. -The Machine looks Fine but when you check it well you will find that it has some errors. -The Weather was cold but she still wears short skirts. -it's easy but you can't accomplish it! Second Use: -you are all punished but Sarah. -Everyone was Serious But You!

but means on the contrary his solution didn't help me,but harmed me a lot. i like tea, but i dont like coffee. means except no one but Ali can leave. means merely(only) he is nothing but a fool. but for = were it not for you but for your help, we couldn't solve this problem