有be donebe used to doingg的语法吗？？

来源：蜘蛛抓取(WebSpider) 时间：2012-02-09 08:19 标签： be always doing
问几个英语语法的区别,最好详细点...to be doing和to be donebe going to和to be doingbe done和过去分词表被动be doing和现在分词表主动have done和have been done
Kyoya12XQ9
1.to be doing和to be done前一种叫不定式的进行时,后一种叫不定式一般式的被动形式He seems to be studying abroad.The disease is said to be caused by viruses.The meeting is to be held at 2 this afternoon.2.be going to和to be doing前一种相当于将来时的助动词后接动词原形.后一种是不定式的进行时He is going to spend his holiday in Hainan.The student pretended to be reading when the teacher came in.3.be done和过去分词表被动前一种是谓语形式.后一种是非谓语形式The work has been finished.The work finished yesterday is important.(过去分词作定语)4.be doing和现在分词表主动前一种是谓语形式.后一种是非谓语形式.They are holding a meeting.The girl standing at the door is Lily.5.have done和have been done前一种是现在完成时的主动式.后一种是被动式.They have finished the work.The work has been finished .
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扫描下载二维码be lost in done/doing有区别吗?1.Much of the goodness in food may be lost in cooking.食物在烹调中可能失去许多养分.2.The old man was lost in thought and did not hear us come in.这个老人凝神沉思，没有听见我们进来。
不存在be lost in done/doing 这样的说法,就是be lost in sth ,这里的cooking 和 thought 都是当名词使用的
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