In Present tenses^x, Football^x, Modals^x

CJ: 1. He was crazy to climb up into that tree. He have fallen and broken his neck. JTT: "in the present", Jim? What is "in the present" and why is it "in the present"? Isn't sentence 1 also "in the present". CJ: This is evidence for my point that the "past forms" of the modals can be...

1a. That's not the man I married, these days he will sit in front of the telly for hours watching football. 1b. At the beginning of our relationship, he would write some romantic letters for me, he would send me flowers every day. 3a. I can swim the distance of 400m in 90 seconds! 3b. As a...