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模糊频度副词 general 这些词都是表示事情发生频率的副词，也是不准确地说某事在一段时间内发生的次数。 always 100% 总是，一直 often 60% 经常 sometimes 40% 有时候 never 零 从不，没有 get up (起床） I always get up at 7:00a.m. have breakfast (吃早餐) I often have breakfast at 6:45a.m. wave [weiv] goodbye挥手告别 I sometimes wave goodbye to my friends. play chess（下象棋） I sometimes play chess with my father after dinner. get up have breakfast wave goodbye return home do homework play chess I 动词的第三人称单数： 动词原形 动词第三人称单数 getgets wavewaves returnreturns playplays havehas dodoes gogoes 动词三单形式的变化规则有： 1）直接加s： give—gives,ask—asks, take—takes, get—gets, write—writes 2） s, x, sh, ch, o结尾的, 加es： fix—fixes , pass—passes, watch—watches, wash—washes, go —goes 3)以辅音字母+y结尾的，要把y变成i再加es： study—studies, carry—carries, worry—worries 4) 特殊变化：have—has waves goodbye is late for school does he