■ under-

这是一个很有用的前缀，用了它，往往可以行文更为简短。

• The FDA has long been underfunded and understaffed. (US News & World Report, Sept. 15-22, 2008, p.27)药物食品管理局长期以来一直经费短缺，人手不足。

• amateur 与 aficionado
• amaze
• ambassador
• America
• amid
• among
• amount
• and
• and
• and at that
• and...at that
• and how
• anesthetic
• angle
• animal
• another
• answer
• answer, reply 与 respond
• anxiety
• anxious
• any
• anybody
• any more
• anymore
• any more than