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一般疑问句形式:把be动词提到句首Isthemanplayingguitar?Yes，再加ing三，以不发音的e结尾，重读闭音节，词尾只有一个辅音字母双写最后一个字母再加ing现在进行时的其他变化:一，否定句形式:直接在be动词后加notThemanisn’trunningHeiswalkingfast二，去掉e，多数情况下直接加ing二，heis三，I’mwatchingTVUnit5JimWhatisJimdoingnow?HeisplayingbasketballWhatisAnnydoing?SheisrunningTheyaredancingandsingingWhataretheydoing?AnnyI’mdrawingI’mplayingbasketballWhatisshedoing?SheisplayingwithaballWhatishedoing?HeiswritingWearedancingWhataretheydoing?TheyarerunningTheyareplayingbasketballTheyaretalkingExample:A:Whatisshedoing?B:SheiswritingA:Whatishedoing?B:HeissingingA:Whataretheydoing?B:TheyarewalkingWhatistheboydoing?Heisdoinghishomework1234HeismendinghisbikeHeisridingabikeHeisswimmingSheishelpinganoldwoman132Heisplaying…TheyareridingbikesHeisplayingbasketballHeisthinkingWhatishedoing?现在进行时的基本结构:Be+V-ing动词现在分词的变化方法：一，对画线部分提问：What+be+主语＋doing?(be动词要和主语保持一致）Theyaredancing，