如何构建知识体系.doc

.如何构建知识体系一、明确谓语与非谓语动词形式的行的区别（一）谓语动词表一（主动语态）一般式完成式进行式完成进行式write/writeshave/ has writtenam, is, are writingHave/has been writingwrotehad writtenwas/were writinghad been writingshall/will writeshall/will have writtenshall ,will be writingshall ,will have been writingshould /would writeshould/would have writtenwould, should be writingshould, wouldhave been writing表二（被动语态）式时一般式进行式完成式现在时amis seenareamis being see