Q:____I have an apple?A:sure.Help yourselfA could B should C would D,DO简要说说理由
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Q:____I have an apple?A:sure.Help yourselfA could B should C would D,DO简要说说理由
Q:____I have an apple?A:sure.Help yourself
A could B should C would D,DO
简要说说理由
Q:____I have an apple?A:sure.Help yourselfA could B should C would D,DO简要说说理由
could
这里是情态动词的用法
should 应该
would 将要
do 助动词
Could 我可以吃个苹果吗?用Could,其他说不过去
could语气委婉,表请求,询问
Could