who bought a new bike yesterday?疑问句中动词不是用原型嘛?为什么这里用bought而不是buy?
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who bought a new bike yesterday?疑问句中动词不是用原型嘛?为什么这里用bought而不是buy?
who bought a new bike yesterday?疑问句中动词不是用原型嘛?为什么这里用bought而不是buy?
who bought a new bike yesterday?疑问句中动词不是用原型嘛?为什么这里用bought而不是buy?
因为主语就是who所以不需要助动词,所以就是不用动词原形啦
如果:When did you buy a new bike 这里主语不是疑问词,所以需要助动词,所以就是动词原形了
who bought a new bike yesterday?在这里不是不定时,而是过去式,在句中作谓语。
因为后面的时间状语yesterday起关键作用,这个时间状语就决定了这句话的时态为过去时,在一般过去时里面,动词也要发生变化,变成过去时。buy-bought-bought
I didn't buy a new bike yesterday. Did you buy a new bike yesterday? 祝你学习进步,更上一层楼!(*^__^*) 有不会的可以再问我:)
为什么是Who bought a new car?而不是Who did buy a new car?
为什么是Who bought a new car?而不是Who did buy a new car?
who bought a new bike yesterday?疑问句中动词不是用原型嘛?为什么这里用bought而不是buy?
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