非谓语动词
1)不定式 时态\语态 主动 被动 一般式 to do to be done 完成式 to have done to have been done
2)动名词 时态\语态 主动 被动 一般式 doing being done 完成式 having done having been done
3)分词 时态\语态 主动 被动 一般式 doing being done 完成式 having done having been done
否定形式: not +不定式, not + 动名词, not + 现在分词