精选优质文档-倾情为你奉上现在完成时一、现在完成时态的结构 have /has (助动词)+done(过去分词)说明: 动词的过去分词有规则形式和非规则形式两种,规则形式同过去式的规则形式。非规则形式需要特殊记忆。可以这样分类:AAA、ABB、ABA、ABC AAA cost-cost-cost,hit-hit-hit,let-let-let,read- read-read, put-put-put,set-set-set hurt-hurt-hurt, cut-cut-cutABB buy-bought-bought,catch-caught-caught,teach-taught-taught ,find-found-found,sell-sold-sold stand-stood-stood build-built-built sleep-slept-slept spend-spent-spentABA come-came-come,become-became-become ,run-ran-runABC break-broke-bro