4 Study the examples. What are the long forms of 've,'s, hasn't and haven't? Then choose the correct words in the rules. I've created a webpage. She's visited a chat room. They've used a webcam. We haven't downloaded music. . He hasn't posted a message. RULES 1 We form the present perfect with be / have + past participle. 2 Regular past participles end with -ed / -ing. 3 We can use the present perfect to talk about experiences / plans which we've had. ​