文档介绍：情态动词
一:填空题
(一)情态动词的定义
    情态动词表示_________________________________________________
(二)情态动词的特点
  1)有一定词义;2)不受主语______________的变化影响;3)与主要动词的_______(或称不带to的不定式)一起构成__________(除ought to作固定词组看待)。4)情态动词的否定式一般在它们的后面加否定词___________构成。
三)常用的情态动词有____和_____;____和_____;____和_____;____和_____;
____和_____;________
can和could
表示_______,________,__________等。Could可以代替can,表示语气较为________
may和might
表示______________________它的否定形式可以用_________,但表示________________________等意思时常用代替may not.
must和have to
表示___________,否定形式____________表示________________________
在回答must的问句时,否定常用________________或________________而不用_________________:must表示说话人的________看法,have to 却是___需要
shall 和should
shall常用于第__________人称,should 表示劝告,建议,常译作________
will 和would
,表示过去时间的“意志”,“意愿”
ought
ought无人称和时态的变化,后接带______的动词不定式。否定形式_________
二:选择题
1. There __________ some flowers in the garden.
  A. were used to be   B. used to be   C. uses to be   D. used to be having
2. "__________ I take it out?"   "I'm sorry, you __________."
  A. Could ...couldn't   B. Might...might not    C. Could...can   D. May...can't
3. You were stupid to climb the tree. You __________ hurt yourself.
  A. may   B. might   C. will   D. might have
4. You __________ those letters. Why didn't you ?
  A. should post   B. should have posted   C. must have posted   D. ought to post.
5. All the lights are o