It has been ….
It has been + time + since + sentence
- Must learn grammar.
- It's = It has
- Event in the Past + Present and Continuing = Present Perfect
EXAMPLES
- Makes 50 years since the first man set foot on the Moon. <- INCORRECT
- It has been 50 years since the first man set foot on the Moon. <- CORRECT
You've studied English grammar, right?
Yes, but it has been a long time since I studied English grammar.
Yes, but it has been a long time since I studied English grammar.
How long has it been since you have been to Europe?
It's been a couple of years at least.
It's been a couple of years at least.
How long since you were last working at Google?
It's been over a year now.
It's been over a year now.
