1、高三英语总复习语法训练情态动词用法详解4. _ 本身有一定的词义，但_作谓语，必须和_ 的不定式连用。没有 _ 的变化。情态动词人称和数不能单独can (could ) , may (might ) , must, ought to , have to ,need, dare,shall(should),will (would)不带tocanbe able to 都表能力No one else can / know the secret.Everyone could / answer this question .Will you be able to come tonight ?you co
2、me tonight ?.is abletowasabletoCanIm sorry I havent been able to help you .She said she hadnt been able to answer your letter通过努力而能够，有更多的 时态形式can could表“能力” “许可”“可能性”More and more people can drive a car.You can stay here.May I come in? （ 表许可， 较正式）用在否定句或疑问句Where can he hide now?The other day I though
3、t the news could not be true.may might 允许和征询对方许可You may take this seat if you like .People may not pick flowers in this garden.- Yes, you may / please. （Certainly)- Please dont . / No , you mustnt. / No , you d better not .不可以- May I smoke here ?表或许,可能,只用在_中You may walk ten miles without seeing a ho
4、use .She may not be here today.She suggested a few books which I might buy.She was afraid they might not like her idea.陈述句May you succeed .May that day come soon.表祝愿Might I ask for a photo of your family?( 比 may I . 更客气一些)I wonder if I might borrow some coffee.You might as well speak your mind .( 比
5、may . 显得婉转些)Of course I might be wrong .might 代替 may 表示可以做的事或可能发生的事.He will can learn English well if he studies hard.Will you answer the phone ? It can be your mother.According to the radio, it can snow this evening._can could ( may ,might)could ( may ,might)Correct the sentencesMay it rain tomorro
6、w?Jack may not go to school today. He is ill.He hasnt come yet. He can not come today._Can /Could_cant /cannot_may not（表可能，用在肯定句）She may not be at home .She can not be at home.可能不不能/不可能Must 表必须要作的事We must do everything step by step.We must show concern for every student . We mustnt stay here any longer.Must we remember a hundred words this week?- Yes ,you must.- No , you mustnt.- No , wrongyou neednt / dont have to.
