How do you use present perfect after "since"? Hi, dear teachers. Here are some correct examples. "...since I've known her" "...since I've owned this car". "I've been stressed out since I've worked in that factory." "I've known him since he's lived next door" 1. Could you give me more examples using the pattern "since + present perfect"? 2. Could you tell me how we use present perfect after "since"(temporal) correctly and naturally? Please don't give me examples using the structure "It's been a period of time since + present perfect" Thank you so much. :)