We use punctuation in writing to help the reader understand our ideas more clearly.We use a full stop (.) at the end of a sentence.I was at a party last night .We use a comma (,) to separate things in a list.At the weekend I went swimming , skiing and skating.We also use commas after linkers like first, after that, finally .After that , I went to bed!We use a question mark (?) instead of a full stop when we ask a question.Where were you last night ?We use an exclamation mark (!) to show enthusiasm.My holiday was great !We use CAPITAL LETTERS at the start of sentences, theword I and for some nouns (see Unit 1).My name is Lucy. I’m from Germany.