以重读闭音节结尾的动词 .ppt

以重读闭音节结尾的动词 变化规则 动词原形 过去形式 一般动词词尾加-ed walk, listen, look, finish walked, listened looked, finished 要字母结尾的动词后加-d live, notice, decide lived, noticed, decided 一辅音字母加结尾的动词，变y为i，再加-ed hurry, study carry hurried, studied carried 以重读闭音节结尾的动词，先双写最后一个辅音字母，再加-ed stop, shop, plan Stopped, shopped, planned 实意动词一般过去时的变化规则： 重读闭音节 三要素 1）一个元音字母，必须是重读音节; （2）元音字母发短元音。 （3）以一个辅音音素结尾； 改变时态或形容词变比较级和最高级时， 重读闭音节需要双写末尾辅音字母. 如: run—running swim--swimming jog—jogging sit---sitting begin---beginning (重读在gin这个音节上，相当于把gin改成双写的) . forbid --- (重读闭音节，双写). prohibit --- (重读在第二音节，非重读闭音节，不双写). prefer --- （重读闭音节，双写） offer --- （重读第一音节，非重读闭音节，不双写） forbidding forbade forbidden prohibiting prohibited preferring preferred offering offered knock---- pick---- walk---- push---- like---- finish---- stop---- notice---- answer---- enter---- hurry---- live---- count---- decide---- close---- look---- shop---- open---- knocked picked walked pushed liked finished stopped noticed answered entered hurried lived counted decided closed looked shopped opened 特殊变法P 274 动词的不规则形式 A-A-A型 put-put- put read-read-read set-set-set let-let-let cut-cut-cut shut-shut-shut hit-hit-hit cost-cost-cost burst-burst-burst forecast-forecast-forecast broadcast-broadcast quit-quit-quit 找出不属于A-A-A型的动词： put，give, hit， cut， set， let， cost， shut， buy, read， see, burst，forecast，broadcast, beat give-gave-given buy-bought-bought see-saw-seen beat-beat-beaten A-B-B型 bring- buy- bleed- bend- burn- build- catch- deal- dig- fight- feed- find- get- hold- hear- have- brought-brought bought-bought bled-bled bent-bent burnt-burnt built-built cau