来自孙少群的问题
【havebeendone与havingbeendone与havebeendoing与havingbeendoing有什么区别】
havebeendone与havingbeendone与havebeendoing与havingbeendoing有什么区别
1回答
2020-05-31 17:49
【havebeendone与havingbeendone与havebeendoing与havingbeendoing有什么区别】
havebeendone与havingbeendone与havebeendoing与havingbeendoing有什么区别
havebeendone
已被做完
havingbeendone
是上面的现在分词短语.
havebeendoing
在过去动作开始一直在进行着.
havingbeendoing
是上面的现在分词短语.
明了吧.