when and where we can put the punctuation?
A period "." goes at the end of a declarative sentence.
We are studying English.
A question mark "?" goes at the end of a question.
Are we studying English?
An exclamation point "!" goes at the end of sentence with great emotion.
Wow! I got an A in English!
A comma "," is used in the middle of a sentence to separate thoughts. You will pause for a comma.
Every time I turn around, it's raining!
It rained on Sunday, on Monday, and on Tuesday.
An apostrophe is used to make a contraction.
I am = I'm
I will = I'll
An apostrophe is also used to signal possession.
John's car = the car that belongs to John.