初中阶段英语用im,un,in加在开头表示反义的词语复制党自重
impossible, impolite, impatient, imperfect,immovable, unhappy, unable, unclean, unimportant, unfair, untrue, unlucky/unfortunate, unforgettable, unborn, uneatable, unhealthy, unheard, unjust, uninterested, unlikely, unkown, unnecessary, unpaid, unpopular, unwilling, incorrect, indirect, inconvenient/inconvenience, inability, independent/independence, informal, invisible