21.3 比較may和might
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1) 表示允許或請(qǐng)求;表示沒有把握的推測;may 放在句首,表示祝愿。
    May God bless you!
    He might be at home.
注意: might 表示推測時(shí),不表示時(shí)態(tài)。只是可能性比may 小。

2) 成語: may/might as well,后面接不帶to 的不定式,意為"不妨"。
    If that is the case, we may as well try.

典型例題
 Peter ___come with us tonight, but he isn't very sure yet.
  A. must  B. may  C. can  D. will
 答案B. 表可能性只能用may. 此句意可從后半句推出。