havegot是什么时态

I'd never have got through it all without you.

假如没有您，我是绝对渡不过这个难关的。

Preparations have got under way for a week of special events in May.

五月份特别活动周的'准备工作已经开始。

It beggars belief how things could have got this bad.

真是难以置信，情况怎么会恶化到这种地步。

Your cheque must have got lost in the post.

你的支票一定是邮寄中遗失的。

I seem to have got off on the wrong foot with the new boss.

看来我和新老板的关系一开头就不好。