作业帮what happens during lunch time What's happening outside?为什么第一句的 happens 要加s,但我知道问句里动词一定要变原形.像是 what happen during lunch time 第二句What's happening outside?为什么这可以用助动词is,那wha
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what happens during lunch time What's happening outside?为什么第一句的 happens 要加s,但我知道问句里动词一定要变原形.像是 what happen during lunch time 第二句What's happening outside?为什么这可以用助动词is,那wha
what happens during lunch time What's happening outside?
为什么第一句的 happens 要加s,但我知道问句里动词一定要变原形.像是 what happen during lunch time 第二句What's happening outside?为什么这可以用助动词is,那what happened to you?为什么不能用what did happed to you?
急
我问：what happens during lunch time?为什么可加S，问举中动词不是要变原型？
what happens during lunch time What's happening outside?为什么第一句的 happens 要加s,但我知道问句里动词一定要变原形.像是 what happen during lunch time 第二句What's happening outside?为什么这可以用助动词is,那wha
what happens during lunch time 是将来时
what's happening outside?是现在时
what happen during lnch time:主语是what,是happen的动作发出者。
what happened to you:解释同上，
what's happening outside?可以说what happened outside,只是这里的's ing形式想说明的是一个时态。
我不太同意一楼的，what happens during lunch time ? 是一般现在时，问中午发生了什么，是客观存在的，所以他用了一般现在时，比如说太阳早上升起了就用现在时不用过去时，因为是客观存在的事实
第二句what's happening outside?是现在进行时，用于正在发生，还有可能继续的情况中。
what happened to you?你没有分清句子结构...
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我不太同意一楼的，what happens during lunch time ? 是一般现在时，问中午发生了什么，是客观存在的，所以他用了一般现在时，比如说太阳早上升起了就用现在时不用过去时，因为是客观存在的事实
第二句what's happening outside?是现在进行时，用于正在发生，还有可能继续的情况中。
what happened to you?你没有分清句子结构，what代替的是你发生的那件事，比如I saw a friend.你问我刚才发生了什么，那么what代替的就是I saw a friend这一句话，作为主语，为什么要did呢？
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